RRB NTPC 2021-16-01-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-16-01-2021-1 RRB Questions

21.
Find the value of 7 × 0.7 × 0.07 × 0.007 × 70 :
A.
0.016807
B.
0.0016807
C.
1.6807
D.
0.16807
😑 View Answer Rough Work
ANSWER :
D. 0.16807
22.

Calculate the compound interest on ₹15,000 in one year at 4% per annum, if the interest is compounded half yearly.

A.

₹600

B.

₹606

C.

₹5,606

D.

₹6,060

😑 View Answer Rough Work
ANSWER :

B. ₹606

23.
The persistence of sound in an auditorium is the result of repeated reflections of sound and is called ______.
A.
Intensity
B.
Vibration
C.
Ranging
D.
Reverberation
😑 View Answer Rough Work
ANSWER :
D. Reverberation
24.

At what rate percent per annum will the simple interest in 15 years on a sum of money be \( \frac{3}{4} \) of the sum invested?

A.

3%

B.

5%

C.

4%

D.

6%

😑 View Answer Rough Work
ANSWER :

B. 5%

25.
Read the given statement and courses of action carefully. Assuming that the information given in the statement is true, even if it appears to be at variance with commonly known facts, decide which of the given courses of action logically follow(s) from the statement.
Statement:
Road accidents are going to increase day by day.
Courses of Action:
I. Government should start awareness programmes that promote following traffic rules strictly.
II. Government should put a limit on registration of new vehicles.
A.
Neither I nor II follows
B.
Only I follows
C.
Either I or II follows
D.
Only II follows
😑 View Answer Rough Work
ANSWER :
B. Only I follows
26.
Which two signs (mathematical operators) should be interchanged to make the given equation correct?
56 − 8÷42÷6×5 = 19
A.
+ and −
B.
+ and ÷
C.
− and ×
D.
÷ and −
😑 View Answer Rough Work
ANSWER :
D. ÷ and −
27.
______ was India's first indigenously made film in colour.
A.
Chhota Chetan
B.
Kisan Kanya
C.
Alam Ara
D.
Raja Harishchandra
😑 View Answer Rough Work
ANSWER :
B. Kisan Kanya
28.
If the sum of the squares of zeros of quadratic polynomial f(x) = x² − 8x + k is 40, then find the value of k.
A.
11
B.
12
C.
10
D.
14
😑 View Answer Rough Work
ANSWER :
B. 12
29.
"The United Nations was not created to take mankind to heaven, but to save humanity from hell." Who said this?
A.
U Thant
B.
Kurt Waldheim
C.
Dag Hammarskjold
D.
Kofi A Annan
😑 View Answer Rough Work
ANSWER :
C. Dag Hammarskjold
30.
______ are known as electronegative elements because they form negatively charged ions by the gain of electrons.
A.
Non-metals
B.
Alloys
C.
Compounds
D.
Mixtures
😑 View Answer Rough Work
ANSWER :
A. Non-metals