NID-DAT 2017 Bdes Answer Key with explanation

Hi,

For now, I've quickly given the answers with little explanation and supportive images, If you're preparing for NID 2018, remind me to update the explanations. I've denied to many comments and messages in the blog and FB when they asked to solve this paper coz I was running out of time and busy with CEED/UCEED students.  Sorry for my previous rejections :)

Anyway, somehow managed time to cover this. 

You can find - NID-DAT 2017 Question paper with official answer key here 

Downloadable PDF - A complete list of SYL links for NID-DAT exam (sitemap) 

Solutions 

Answer image to Q30

1) D

Red flames can be from 500 to 800 degrees Celsius, while white flames can be 1,600 C or more. I

2) C

It's nothing but USB

3) C

4) D

Obviously, there should be two or more layers and that too gap filled by air, because air has less conductivity

5) C

6) B

Just breath in and observe :P

7) B

While Garden city of India

Jaipur is the city of Palaces

8)  C

Below image shows the belts of famous rivers,

Only Godavari and Krishna among the options spread from east to west or vice versa, but Krishna in the lower part covering mostly AP and KN.

9) A

It's clear Urjit R Patel is the current 

and the first id Bimal Jalan, so only 1 or 2 applies, if u observe the other names too, you will find A as the correct 

Here's the complete list of governors - 

10) C

pretty easy, Thomas Edison invented bulb and Gramaphone

11) B 

Obviously, we're living here :P and others are considered as planetary gods

12) 

Jharkhand - formed on 15th Nov 2000

Uttarakhand - formed on 8th Nov 2000

Arunachal Pradesh - 20th Feb 1987

Chattisgarh - 1st Nov 2000

Just in a matter of days, right!

13) B

14) A

All the rest are south indian dances 

15) D

small size cubes - 9*3 = 27

4 cubes taken together = 8

Whole 27 cubes taken together form 1 cube

Total = 36

16) C

17) B

The Nobel Prize in Physics 1921 was awarded to Albert Einstein for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect

18) A

Yellow and Blue mix to form Green

19) B

20) D

21) B

straight answer

2,4,6,8

j, g, d, a

22) B

As you can see, from left to right more space is visible, i mean whilte space, so obviously area is decreasing. As the bigger part gets into pieces, it's permiter increases

23) D

24) A

25) A

26) A

I don't understand why NID asks this kind of silly questions!

27) C

28) C

29) C

30) A

31) D

32) C, D

33) B

34) C

What I understood is the alphabet with open ends on top has '0' in the decipher, 'u' and 'y' have opened at the top, so their corresponding symbols can have 0. 

35) B or D

36) A

37) C

38) C

Hurricane sandy merged with a winter and not a winter storm as such, so 1 sic not correct

Mammoth hybrid is not another name, but it's the term denoting the gaintness of the storm, 6 is also incorrect

39) D

40) D

41) A

RamPrasad and Rekha are like cousins, so Rekha is Sudhir's Aunt

42) A

43) B

Given

(X+Y+Z)/3 = 32

so,

X = 32*3 - (Y+Z)

Given 

(Y+Z)/2 = 27

so Y+Z = 54

from the above

X = 32*3 - (Y+Z)

X = 32*3 - 54 = 42

They asked to average X and 2X

which will be (X+2X)/2 = 1.5*X = 63

44) A

The pattern tells that all the open crosses must be closed first, in that case transaction from 4th to 6th happen by closing the open at the bottom

45) C

statement (1)  762 - shoes are old

(2) 248 - grandpa is old

(3) 573 - buy good shoes

from the three, we can deduct that

7 - shoes [from (1) and (3)]

2 - old [from (1) and (2)]

6 - are [only 6 left after above two which should be 'are'

46) C

it's like this

8 square - 5 square = 64 - 25 = 39

4 square - 1 square = 16 - 1 = 15

7 square - 4 square = 49 - 16 = 33

47) No correct option (Ans is 15)

Front - 3

right - 3

back - 2

left - 3

top - 3

bottom - 1

48) A

If you observe each pattern, that rectangle alternates in filled and empty, so pattern in R should have empty rectangle (either A or B)

and in each pattern that L shape with a bar at his head, flips and moves in opposite direction, it neither follows clock or anticlockwsie direction in each pattern. So, A suits after Q

49) D

50) B

by observation

51) D

Front - 1

right - 2

back - 2

left - 1

top - 2

bottom - 1

52) C

Four surfaced triangles, that's tetrahedron

53) D

all other options cannot give the relative size, there must be some other object adjacent to it to determine it's size

54) C

K is for sure represent movement, also the outer rectangle in L is not like others which represents conflict, so C should be the answer 

55) B

base row = 3+2+1 cubes

2nd row = 2+ 1 cubes

top row = 1 cube

56) D

57) A

58) B

59) C

60) B

61) D

62) C

63) A

64) B

65) B

Pretty simple, start with top left triangle numbered 1, followed by 4 or 3, after the first three, it's  for sure that we have to use 5

66) C

The question has unnecessary data confusing. But the simple answer is, 

let x,y be the ages of elder and younger bros

A,B be ages of father and mother

given

x-y = A-B

also given that A-B = 4

when the younger has just born, i.e. y =0, so

x-0 = 4

x= 4, when his mother was 30 years

so when the elder is 4, his father is 30+4, since mom and dad age diff are only 4

whent eh elder is just born, i.e. four years back, his father will be 34-4 = 30

67) A

one possible pattern could be

sid, Baldev, Mahesh, Ram, Krish

68) D

69) C

It tells the no. of overlapped rectangles, so '?' should be 3

70) B

say x is the distance to the hill

so, to cover x km, time taken is x/20 hrs

similarlyy time taken downhill to cover same distance = x/60

Now, total distance = x+x = 2x

and total time taken = x/20+x/60 = 4x/60 = x/15

so 2x distance takes x/15 hr

revrsing,

x/15 hr time is needed to cover 2x distance

so, for 1 hr, distance covered = 2x/(x/15) = 30 kms

71) C

72) A

I've shown which pattern will appear in which surface for the third given cube in the question based on rest images i nthe question.

73) A, B

XI + I = X

if you turn the paper by 180 deg

you get 

X = I + IX

equating above two

XI + I = I +IX

XI = IX

So, if you place IX in the place of XI in the first statement, second statement will be valid, so it is possible option

74) A

75) A

B for sure denote Rabbit!