NIELIT Scientist -B CS (22-07-17)

Question 1
What is the maximum number of the handshakes that can happen in the room with 5 people in it?
A
15
B
10
C
6
D
5
Question 1 Explanation: 
Let’s suppose there is ‘n’ number of persons are there and each one suppose to do an handshake with ‘n-1 persons.
So, Total number of handshakes is = n(n-1) (with repetition)
But we need without repetition means distant handshakes (A→ B, B → A) so we divided by ‘2’
= n(n-1) / 2
= 5(5-1) / 2
= 10
Question 2
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
A
120 meters
B
180 meters
C
324 meters
D
150 meters
Question 2 Explanation: 
Let’s take length of the train = ‘x’
Speed of the Train = 60km/hr and crosses a pole in 9 Seconds.
Speed of the train is km/hr and crosses a pole in seconds.
So we need to convert the km/hr into mts /sec.
For that one we need to multiply the speed of the train to (5/18).
Speed of the train = 60 * (5/18)
We have one Basic formula in Time and Distance
Distance = Speed * Time
x = 60 * (5/18) * 9
x = 150 mts
Question 3
The percentage profit earned by selling an article for Rs. 1,920 is equal to the percentage loss incurred by selling the same article for Rs. 1,280. At what price should the article be sold to make 25% profit?
A
Rs 2,000
B
Rs 2,200
C
Rs 2,400
D
Data inadequate
Question 3 Explanation: 
For this Problem, We need two important formulas.
1. %Profit = ((Selling Price - Cost Price) / (Cost Price) ) * 100
2. %Loss = ((Cost Price - Selling Price) / (Cost Price)) * 100
From the above question we know
% Profit = % Loss
Selling price when they got profit = 1920 /-
Selling price when they got loss = 1280 /-
((1920 - Cost Price ) / ( Cost Price) ) * 100 = (( Cost Price - 1280 ) / (Cost Price)) * 100
After Solving this
2 * Cost Price = 3200
Cost Price = 1600
We got cost price, Now we need to find out Selling price when they got 25% Profit
Cost Price = 1600
Profit% = 25
Selling Price = ?
%Profit = ((Selling Price - Cost Price) / (Cost Price) ) * 100
25 = ((Selling Price - 1600) / 1600)) * 100
25 * 16 = Selling Price - 1600
Selling Price = 1600 + 400
Selling Price = 2000/-
Question 4
A boatman goes 2 Km against the current of the stream in 1 hour and goes 1 Km along the current in 10 minutes. How long will it take to go 5 Km in stationary water?
A
40 minutes
B
1 hour
C
1 hr 15 min
D
1 hr 30 min
Question 4 Explanation: 
Speed of the Down Stream = 2 km/ 1 = 2 km/hr
Speed of the Upstream = 5km / (10/60) = 6km/hr
Speed of the Boat still in water = (Downstream + Upstream ) / 2 = (6 + 2) / 2
= 4 km/hr
Time taken for 5 km in Stationary water = 5/4 = 1(1⁄4)
= 1Hr 15 Min
Question 5
The present ages of three persons in proportions 4 : 7 : 9. Eighty years ago, the sum of their ages was 56. Find their present ages (in years).
A
8, 20, 28
B
16, 28, 36
C
20, 35, 45
D
None of the above
Question 5 Explanation: 
Present age of 3 persons is = 4x, 7x, 9x
Eight years ago their sum is = 56
So,
4x+7x+9x-(8+8+8) = 56 (Eight Years Ago so that we subtract their individual ages from present age)
20x = 80
x = 4
Present ages = 4 * 4 , 7*4, 9*4
= 16, 28, 36
Question 6
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?
A
6 hours
B
10 hours
C
15 hours
D
30 hours
Question 6 Explanation: 
Let’s take the first pipe to a fill a tank in ‘x’ hours.
So, from that question we know that second pipe fills a tank 5 hours faster than 1st pipe means second pipe fills a tank in ‘x/5’ hours.
And Second pipe fills a tank 4 hours slower than third pipe means third pipe can fill a tank in ‘x/20’ hours.
The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone.
(1 / x) + (5 / x) = (20 / x)
x = 15 Hours
Question 7
A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 sq feet, how many feet of fencing will be required?
A
34
B
40
C
68
D
88
Question 7 Explanation: 
Given that length and area, so we can find the breadth.
Length x Breadth = Area
20 x Breadth = 680
Breadth = 34 feet
Area to be fenced = 2B + L = 2 (34) + 20 = 88 feet
Question 8
In how many different ways can the letters of the word ‘CORPORATION’ be arranged so that the vowels always come together?
A
810
B
1440
C
2880
D
50400
Question 8 Explanation: 
In ‘CORPORATION’ We have total 5 vowels (OOAIO) and taken has one unit
Remaining Consonants are (CRPRTN) 6 and add vowels unit 1.
6 + 1 = 7 In this R is repeated 2 times
In ‘CORPORATION’ We have total 5 vowels (OOAIO) and taken has one unit Remaining Consonants are (CRPRTN) 6 and add vowels unit 1. 6 + 1 = 7 In this R is repeated 2 times So number of ways we can arrange these words = 7! / 2! = 2520
number of ways we can arrange vowels is 5!
2 ‘O’ are repeated so 5! / 2! = 20
Total Number ways = 2520 * 20 = 50400
So number of ways we can arrange these words = 7! / 2! = 2520
number of ways we can arrange vowels is 5!
2 ‘O’ are repeated so 5! / 2! = 20
Total Number ways = 2520 * 20 = 50400
Question 9
Seats for Mathematics, Physics and Biology in a school are in the ratio of 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?
A
2 : 3 : 4
B
6 : 7 : 8
C
6 : 8 : 9
D
None of the above
Question 9 Explanation: 
Seats for Mathematics, Physics and Biology in a school are in the ratio is 5:7:8.
There is a proposal to increase these seats by 40%, 50% and 75% respectively means
After increasing seats ratio will be
5 * (140/100) : 7 * (150/100) : 8 * (175/100)
5 * 140 : 7 * 150 : 8 * 175
28 : 42 : 56
2 : 3 : 4
Question 10
A flag staff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar condition will be?
A
10 m
B
12.5 m
C
17.5 m
D
21.25 m
Question 10 Explanation: 
Let’s take height of the building is x.
From that question we know that less height less shadow so it’s directly proportional.
40.25 : 17.5 : : 28.75 : x
x = (17.5 * 28.75) / 40.25
x = 12.5 m
Question 11
Find the odd one in the following series for
396, 462, 572, 427, 671, 264
A
396
B
427
C
671
D
264
Question 11 Explanation: 
Except 427 remaining numbers are sum of first number and last number is middle number.
Question 12
Find the odd one in the following series for
2, 5, 10, 17, 26, 37, 50, 64
A
50
B
26
C
37
D
64
Question 12 Explanation: 
From the above sequence we know that
2 + 3 = 5
5 + 5 = 10
10 + 7 =17
17 + 9 = 26
26 + 11 = 37
37 + 13 = 50
50 + 15 = 65 But in the question they given 64. So 64 is wrong.
Question 13
The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Re. 1. The sum (in Rs.) is
A
625
B
630
C
640
D
650
Question 13 Explanation: 
The difference between compound interest and simple interest on Rs. P for 2 years at R% per annum is = p * (R/100)^2
P * (R/100)^2 = 1
P * (4/100)^2 = 1
P * (1/25)^2 = 1
P = 625
So, Sum is 625
Question 14
The angle of elevation of the sun, when the length of the shadow of a tree is 3 times the height of the tree, is
A
30​ 0
B
45​ 0
C
60​ 0
D
90​ 0
E
None of the above
Question 15
Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. Then sum of the digits in N is
A
4
B
5
C
6
D
8
Question 15 Explanation: 
For this type of questions we have to find gcd of (4665 - 1305), (6905 - 4665) and (6905 - 1305)
So, = H.C.F. of 3360, 2240 and 5600 = 1120.
sum = 1+1+2+0 = 4.
Question 16
The study of fossils is known as
A
Ethnology
B
Palaeontology
C
Synecology
D
Ombrology
Question 17
Who has been elected as the president of Cricket Association of Bengal (CAB) in 2015?
A
Sourav Ganguly
B
Anil Kumble
C
Sunil Gavaskar
D
Mohd. Azharuddin
Question 18
Which company committed to invest $150 million for the Indian Startups during the Indian Prime Minister’s Sept 2015 US trip?
A
Qualcomm
B
Yahoo
C
Google
D
Microsoft
Question 19
What is the name of the Second Guided Missile Destroyer which has been commissioned into Indian Navy recently?
A
INS Vajram
B
INS Kochi
C
INS Kolkata
D
INS Mumbai
Question 20
Which city hosted South Asian Games in January 2016?
A
Bhopal and Jaipur
B
Mumbai and Kolkata
C
New Delhi and Pune
D
Guwahati and Shillong
Question 21
Which country is poised to become the third largest buyer of commercial passenger planes in the world with only the US and China ahead of it?
A
France
B
India
C
Germany
D
None of the above
Question 22
Which city is being developed as the new capital of current state of Andhra Pradesh?
A
Hyderabad
B
Amaravati
C
Vishakhapatnam
D
None of the above
Question 23
Garampani sanctuary is located at
A
Junagarah, Gujarat
B
Diphu, Assam
C
Kohima, Nagaland
D
Gangtok, Sikkim
Question 24
Ashoka’s ‘Dhamma’ or ‘Law of Piety’
A
Had the essence of all religions
B
was a revolt against inefficiency in the Buddhist Sangha
C
Was a new religion which he founded after the Kalinga war
D
Laid emphasis on following a strict set of rituals
Question 25
Which two countries have voted against a Feb. 2017 UN resolution to impose sanctions against Syria over its alleged use of chemical weapons?
A
US and Russia
B
US and France
C
Russia and China
D
France and China
Question 26
Which country has recently unveiled a project dubbed “Mars2117”, under which it aims to establish the first inhabitable human settlement on planet Mars by year 2117?
A
China
B
Japan
C
UAE
D
South Korea
Question 27
Daniel Ortega has been sworn in for a third consecutive term as president of which Central American Country?
A
Costa Rica
B
Honduras
C
Nicaragua
D
El Salvador
Question 28
Which among the following airports has claimed that it has become the first aerodrome in the world to adopt unique performance and benchmarking digital platform, Arc, which helps in tracking and monitoring building performance?
A
Indira Gandhi International(IGI) Airport Delhi
B
Babasaheb Ambedkar International Airport, Nagpur
C
Sardar Vallabhbhai Patel International Airport, Ahmedabad
D
Lokpriya Gopinath Bordoloi International Airport, Guwahati
Question 29
”Socialist”; “Secular” ,”Unity and Integrity of the Nation” [to replace only “Unity of the Nation”], were added in the Preamble as per which Amendment to the Indian constitution?
A
Thirty eight Amendment 1975
B
Forty second Amendment 1976
C
Thirty first Amendment 1973
D
Forty fourth Amendment 1978
Question 30
Which Nation won Davis Cup in 2016?
A
Switzerland
B
Spain
C
Argentina
D
England
Question 31
1. The hotel is two blocks east of the drugstore.
2. The market is one block west of the hotel.
3. The drugstore is west of the market. If the first two statements are true, the third statement is
A
True
B
False
C
Uncertain
D
Insufficient data
Question 32
Vincent has a paper route. Each morning, he delivers 37 newspapers to customers in his neighborhood. It takes Vincent 50 minutes to deliver al the papers. If Vincent is sick or has other plans, his friend Thomas, who lives on the same street, will sometimes deliver the papers for him.
From the above data, which of the following statements must be true?
A
Vincent and Thomas live in the same neighborhood
B
It takes Thomas more than 50 minutes to deliver the papers
C
It is dark outside when Vincent begins his deliveries
D
Thomas would like to have his own paper route
Question 33
Which number pair comes next in the series?
4 7 26 10 13 20 16
A
14 4
B
14 17
C
18 14
D
19 14
Question 33 Explanation: 
The next two numbers in the sequence are 19, 14.
Check the pattern 4, 7 and 10, 13. These pair of numbers are separated by 3. So extending the logic, the next pair of numbers should be 16, 19.
Now for the pair of numbers 26, 20. They are separated by 6. Hence extending the logic, the next number in sequence should be 14.
Hence the sequence should be 4,7, 26, 10, 13, 20, 16, 19, 14, 22, 25, 8 etc.
Question 34
Which word does not belong with the others?
A
Cornea
B
Retina
C
Vision
D
Pupil
Question 34 Explanation: 
Those all words are part of eye except Vision.
Question 35
Complete the missing element of the following series:
A
1
B
2
C
3
D
4
Question 35 Explanation: 
When we observe above diagram all the first and last elements are same and coming to middle one for first two is same and after two is should be same.
Question 36
JAK, KBL, LCM, MDN, _______________
A
OEP
B
NEO
C
MEN
D
PFQ
Question 36 Explanation: 
That series is like J K L M next is N
Same like A B C D next is E
K L M N next is O
So, Finally NEO
Question 37
FAG, GAF, HAI, IAH, _________________
A
JAK
B
HAL
C
HAK
D
JAI
Question 37 Explanation: 
In the above pattern F G H I next is J
A A A A next is A
G F I H next is K
So,
Finally JAK
Question 38
Applying for Seasonal Employment occurs when a person requests to be considered for a job that is dependent on a particular season or time of year. Which situation below is the best example of Applying for Seasonal Employment?
A
The Ski instructions at Top of the Peak Ski School work from December through March
B
Matthew prefers jobs that allow him to work outdoors
C
Lucinda makes an appointment with the beach resort restaurant manager to interview for the summer waitressing position that was advertised in the newspaper
D
Doug’s ice cream shop stays open until 11 p.m. during the summer months
Question 39
QAR, RAS, SAT, TAU, ________________
A
UAV
B
UAT
C
TAS
D
TAT
Question 39 Explanation: 
From that series
Q R S T next is U
A A A A next is A
R S T U next is V
Finally UAV
Question 40
If gorblflur means fan belt pixngorbl means ceiling fan arthtusl means tile roof Which word could mean “ceiling tile”?
A
gorbltusl
B
flurgorbl
C
arthflur
D
pixnarth
Question 41
The town of Paranda is located on Green lake. The town of Akram is West of Paranda. Tokhada is East of Akram but West of Paranda. Kokran is East of Bopri but West of Tokhada and Akram. If they are all in the same district, which town is the farthest West?
A
Paranda
B
Kokran
C
Akram
D
Bopri
Question 41 Explanation: 
From the above question we got like this
Bopri Kokran Akram Tokhada Paranda
So,
The farthest west is Bopri
Question 42
Get odd one out.
A
YWU
B
NLJ
C
KIF
D
VTR
Question 42 Explanation: 
In those series let’s take first one YWU
Reverse it, UWY for between each and every letter there is one letter missing like UVWXY
So, Reverse those letters YXWVU means YWU
But coming to option C is different in between I and F there is two letters missing. So option C is odd one.
Question 43
Two students appeared at an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are
A
39, 30
B
41, 32
C
42, 33
D
43, 34
Question 43 Explanation: 
Let’s one student secured marks ‘x’
Another student secured ‘x + 9’
According to question
x + 9 = (56 * 100)(x + x + 9)
100 (x + 9) = 56 (2x + 9)
After solving this we got x = 33
So option C is correct.
Question 44
Find the number of triangles in the given figure
A
8
B
10
C
12
D
14
Question 44 Explanation: 
There are total 14 number of triangles are present in that figure
Question 45
Choose a figure which would most closely resemble the unfolded form of Figure (Z).
A
1
B
2
C
3
D
4
Question 46
8 persons E, F, G, H, I, J, K and L are seated around a square table – two on each side.
There are 3 ladies who are not seated next to each other.
J is between L and F.
G is between I and F.
H, a lady member is second to the left of J.
F, a male member is seated opposite to E, a lady member.
There is a lady member between F and I.

Who among the following is to the immediate left of F?
A
G
B
I
C
J
D
H
Question 47
8 persons E, F, G, H, I, J, K and L are seated around a square table – two on each side.
There are 3 ladies who are not seated next to each other.
J is between L and F.
G is between I and F.
H, a lady member is second to the left of J.
F, a male member is seated opposite to E, a lady member.
There is a lady member between F and I.

What is true about J and K?
A
J is male, K is female
B
J is female, K is male
C
Both are female
D
Both are male
Question 48
8 persons E, F, G, H, I, J, K and L are seated around a square table – two on each side.
There are 3 ladies who are not seated next to each other.
J is between L and F.
G is between I and F.
H, a lady member is second to the left of J.
F, a male member is seated opposite to E, a lady member.
There is a lady member between F and I.

How many persons are seated between K and F?
A
1
B
2
C
3
D
4
Question 49
8 persons E, F, G, H, I, J, K and L are seated around a square table – two on each side.
There are 3 ladies who are not seated next to each other.
J is between L and F.
G is between I and F.
H, a lady member is second to the left of J.
F, a male member is seated opposite to E, a lady member.
There is a lady member between F and I.

Who among the following are three lady members?
A
E, H, and J
B
E, F and G
C
E, H and G
D
C, H and J
Question 50
8 persons E, F, G, H, I, J, K and L are seated around a square table – two on each side.
There are 3 ladies who are not seated next to each other.
J is between L and F.
G is between I and F.
H, a lady member is second to the left of J.
F, a male member is seated opposite to E, a lady member.
There is a lady member between F and I.

Who among the following is seated between E and H?
A
F
B
I
C
K
D
Cannot be determined
Question 51
Choose the most appropriate words from the options given below to complete the following sentence ;
Female sparrows and immatures are _____, while the typical adult male sparrow is _____ by its markings; a black bib, a grey cap, and white lines trailing down from the mouth.
A
Somewhat nondescript, easily recognized
B
Difficult to spot, better camouflaged
C
Considered to be endangered, characterized
D
Comparatively small, made more conspicuous
Question 52
Find the best correction for the underlined sentence from the four options give below, Under a provision of the Constitution that ​
    was never applied. Congress has been required to call a convention for considering possible amendments to the document when formally asked to do it
by the legislatures of two-thirds of the states
A
Was never applied, Congress has been required to call a convention for considering possible amendments to the document when formally asked to do it
B
Was never applied, there has been a requirement that Congress call a convention for consideration of possible amendments to the document when asked to do it formally
C
Has never applied, whereby Congress is required to call a convention to consider possible amendments to the document when formally asked to do so
D
Has never been applied, Congress is required to call a convention to consider possible amendments to the document when formally asked to do so
Question 53
Statement:​ Should all the drugs patented and manufactured in Western countries be first tried out on sample basis before giving license for sale to general public in India?
Arguments:
i. Yes. Many such drugs required different doses and duration for Indian population and hence it is necessary.
ii. No. This is just not feasible and hence cannot be implemented.
Choose from the following:
A
Only argument i is strong
B
Only argument ii is strong
C
Either i or ii is strong
D
Neither i nor ii is strong
Question 54
A Huge majority – 84 percent – of the population identifies as Hindu. There are many variations of Hinduism, and four predominant sects – Shiva, Vaishnava, Shakteya and Smarta. About 13 percent of Indians are Muslim, making it one of the largest Islamic nations in the world. Christians and Sikhs make up a small percentage of the population, and there are even fewer Buddhists and Jains.

The passage best supports the statement that
A
Culture, Traditions and Customs of India are diverse
B
India is known as a multilingual country
C
India is identified as the birthplace of Hinduism and Buddhism
D
India is a country where diversity in religion exists
Question 55
Choose the appropriate answer the following answer to complete the following sentence:
To those of us who had always thought him timid, his ________came as a surprise.
A
Inability
B
Inevitability
C
Intrepidity
D
Inertness
Question 56
Three ladies X, Y and Z marry three men A, B and C. X is married to A, Y is not married to an engineer, Z is not married to a doctor, C is not a doctor and A is a lawyer. Only monogamous relationships are permitted. Then which of the following statements is correct?
A
Y is married to C who is an engineer
B
Z is married to C who is a doctor
C
X is married to a doctor
D
None of the above options
Question 56 Explanation: 
From that question we know that
X married to A and A is lawyer.
Y not married to Engineer and Z not married to Doctor.
But C is not Doctor so from this statement Z married to C who is Engineer.
Finally Y married to B who is Doctor.
Question 57
Arrange sentences A, B, C and D between sentences 1 and 6, to form a logical sequence of six sentences.
1. The new economic policy comprises the various measures and changes introduced since july 1991.
(A) There is a common thread running through all these measures
(B) The objective is simple – to improve the efficiency of the system
(C) The regulatory mechanism involving multitude of controls has fragmented the capacity and reduced competition even in the sector.
(D) The thrust of the new policy is towards creating a more competitive environment as a means to improving the productivity and efficiency of the economy.
6. This is to be activated by removing the barriers and restrictions on the entry and growth of firms.

A
DCAB
B
ABCD
C
BDAC
D
DCBA
Question 58
Correct the underlined part of the sentence by choosing the correct option.
Bombast​
    is when high sounding words for effect, not suitable, are used.
A
is when high sounding words for effect, not suitable, are used
B
is the use of high-sounding words for effect rather than for suitability
C
is where high-sounding words are used for effect not suitability
D
is the using of high-sounding words for effect only
Question 59
Pick the word from the four options which is most nearly opposite in meaning to the bold word.
RECALCITRANT
A
feckless
B
yielding
C
sombre
D
polished
Question 59 Explanation: 
Meaning of ​ RECALCITRANT ​ is uncooperative,intractable,unmanageable
option A and C and D those words are giving same meaning as RECALCITRANT but option B is opposite meaning of RECALCITRANT yielding means not hard or rigid.
Question 60
The question below consists of a pair of related words followed by four pairs of words.
Select the pair that best expresses the relation in the original pair.
QUISLING : BETRAY
A
taunt : provoke
B
inception : termination
C
juggernaut : crush
D
obstinate : preserve
There are 60 questions to complete.