RRB-NTPC 2021 General Awareness

Practice subject-wise previous year questions

Question 676
GK

If the radius of the base of a right circular cylinder is decreased by 18% and its height is increased by 141%, then what is the percentage increase (closest integer) in its volume?

A
74%
B
92%
C
43%
D
62%
Question 677
GK

A man walks to a viewpoint and returns to the starting point by his car maintaining a constant speed and thus, takes a total time of 4 hours 45 minutes. He would have gained 2 hours by driving both ways. How long would it have taken for him to walk both ways with the same walking speed?

A
6 hours 30 minutes
B
7 hours 15 minutes
C
5 hours 45 minutes
D
6 hours 45 minutes
Question 678
GK

The average runs scored by a batsman in 23 matches is 43. In the next 10 matches, the batsman scored an average of 14 runs. Find his average runs scored (rounded off to two decimal places) in all the 33 matches.

A
35.21
B
34.21
C
33.21
D
36.21
Question 679
GK

Salil's salary was first reduced by 25% and subsequently raised by 12%. What percentage was his final salary lower than his initial salary?

A
3%
B
16%
C
12%
D
25%
Question 680
GK

The LCM of the numbers 4.7 and 0.04 is:

A
94
B
0.94
C
9.4
D
0.094
Question 681
GK

If the third proportional of 16 and 40 be x, then what is the value of x?

A
102
B
99
C
101
D
100
Question 682
GK

Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.  (Left) @ + 1 < 9 6 9 2 % \ $ \ + 2 & $ 3 2 ^ 9 9 (Right)  How many such numbers are there that are immediately preceded by a symbol and immediately followed by another number?

A
Three
B
One
C
Two
D
Four
Question 683
GK

If + means -, - means $\times$, $\times$ means $\div$ and $\div$ means +, then what will come in place of the question mark (?) in the following equation? $75 \times 5 + 11 - 2 \div 18 = ?$

A
21
B
17
C
26
D
11
Question 684
GK

Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which is the letter-cluster pair that DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

A
KE-MF
B
EY-GZ
C
YS-AT
D
PJ-RI
Question 685
GK

A is the brother of S. S is the daughter of L. L is married to K. K is the daughter of D. D is the father of P. P is the sister of R. R is married to N. How is D related to S?

A
Father's brother
B
Mother's father
C
Father 
D
Father's father
Question 686
GK

Each of the digits in the number 5341289 is arranged in ascending order from left to right. The position(s) of how many digits will remain unchanged as compared to that in the original number?

A
Two
B
One
C
None
D
Three
Question 687
GK

What should come in place of the question mark (?) in the given series? $108 \ 122 \ 139 \ 159 \ 182 \ 208 \ ?$

A
222
B
237
C
229
D
248
Question 688
GK

Select the set in which the numbers are related in the same way as are the numbers of the following sets. (Note: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g., 13 - Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (19, 31, 55) (14, 26, 50)

A
(48, 60, 84)
B
(18, 32, 54)
C
(15, 30, 45)
D
(13, 26, 43)
Question 689
GK

If '+' means 'subtraction', '-' means 'multiplication', '$\times$' means 'division' and '$\div$' means 'addition', then what will come in place of the question mark (?) in the following equation? $64 \times 8 + 6 - 6 \div 33 = ?$

A
20
B
5
C
10
D
15
Question 690
GK

What should come in place of the question mark (?) in the following series? $2 \ 6 \ 12 \ 20 \ ?$

A
40
B
35
C
30
D
25
Question 691
GK

What should come in place of the question mark (?) in the given series based on the English alphabetical order? WRM RMH MHC HCX ?

A
CXD
B
CDX
C
CXS
D
CSX
Question 692
GK

In the following triads, each group of letters is related to the subsequent one following a certain logic. Select from the given options, the one which follows the same logic. LIVE - ELVI - LEIV HANG - GHNA – HGAN

A
PORT - TPOR - ORTP
B
REDS - ERDS - SEDR
C
DUSK - KDSU - DKUS
D
PAIN - NPIA - PANI
Question 693
GK

Select the pair that follows the same pattern as that followed by the two pairs given below. Both pairs follow the same pattern. ERT : FSV RDX : SEZ

A
DUC : EVD
B
UHS : VIU
C
EOC : FPF
D
IOP : JPS
Question 694
GK

HDLI is related to FBJG in a certain way based on the English alphabetical order. In the same way, KGOL is related to IEMJ. To which of the given options is NJRO related, following the same logic?

A
LHPM
B
LHMP
C
HLPM
D
HLMP
Question 695
GK

Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

A
SXR
B
LQK
C
NSL
D
QVP
Question 696
GK

Gautam starts from Point A and drives 9 km towards south. He then takes a right turn, drives 4 km, turns right and drives 11 km. He then takes a right turn and drives 6 km. He takes a final right turn, drives 2 km and stops at Point P. How far (shortest distance) and towards which direction should he drive in order to reach Point A again? (All turns are $90^\circ$ turns only unless specified.)

A
2 km to east
B
2 km to west
C
3 km to west
D
3 km to east
Question 697
GK

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? ZY 43 VU 40 RQ 35 NM 28 ?

A
JI 19
B
JI 18
C
KJ 18
D
KJ 19
Question 698
GK

Seven boxes A, B, C, D, E, F and G are kept one over the other but not necessarily in the same order. G is kept immediately above F. C is kept immediately above A. Only E is kept above B. Only two boxes are kept above G. C is not kept at the third position from the bottom. How many boxes are kept above B?

A
1
B
4
C
3
D
2
Question 699
GK

Read the given statement(s) and conclusions carefully. Assuming that the information given in the statement(s) is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statement(s). Statements: All buckets are mugs. All mugs are cans. Conclusions: (I) Some cans are mugs. (II) All buckets are cans.

A
Neither conclusion (I) nor (II) follows.
B
Both conclusions (I) and (II) follow.
C
Only conclusion (I) follows.
D
Only conclusion (II) follows.
Question 700
GK

This question is based on the five, three-digit numbers given below. (Left) 629 189 586 643 746 (Right) (Example- 697 - First digit = 6, second digit = 9 and third digit = 7) (NOTE: All operations to be done from left to right.) If 2 is added to the first digit of every number, in how many numbers thus formed will the first digit be exactly divisible by the second digit?

A
Two
B
None
C
Three
D
One