RRB Group D 2022-6-10-2022-1 RRB Question Paper

RRB Group D 2022 Question Papers

RRB Group D 2022-6-10-2022-1 RRB Questions

21.
A 12 V battery is connected across an unknown resistor. If a current of 2 mA is flowing through the circuit, the value of the resistance is ________.
A.
600 ohm
B.
6 ohm
C.
6000 ohm
D.
60 ohm
😑 View Answer Rough Work
ANSWER :
C. 6000 ohm
22.
Which of the following statements is/are true regarding the centre of curvature of a spherical mirror?
(S - I) The centre of curvature (C) of a spherical mirror is the centre of the sphere of which the mirror is a cut part.
(S - II) The aperture (D) of a spherical mirror is the diameter of the sphere of which the mirror is a cut part.
(S - III) The principal focus (F) is strictly the mid-point between the pole (P) and the centre of curvature (C) of a spherical mirror.
A.
(S - I) and (S - II) only
B.
(S - I) and (S - III) only
C.
(S - I) only
D.
(S - I), (S - II) and (S - III)
😑 View Answer Rough Work
ANSWER :
B. (S - I) and (S - III) only
23.

A shopkeeper offers a scheme of either selling articles at successive discounts of 30% and 20% or one where a customer can “buy 2, get 1 free”. The positive difference in overall nominal percentage discounts offered in the two schemes is:

A.

11 \( \frac{2}{3} \) %

B.

10 \( \frac{1}{3} \) %

C.

11  \( \frac{1}{3} \) %

D.

10 \( \frac{2}{3} \)%

😑 View Answer Rough Work
ANSWER :

D. 10  \( \frac{2}{3} \) %

24.
Rama Navami is a Hindu spring festival that commemorates God Rama’s birthday, which usually comes in the month of _____.
A.
June
B.
July
C.
April
D.
August
😑 View Answer Rough Work
ANSWER :
C. April
25.

The volume of a right circular cylinder is 814 cm³. If the radius and the height of the cylinder are equal, find the height (in cm) of the cylinder.
(Use π = \( \frac{22}{7} \))

A.

\(\sqrt[5]{259}\)

B.

\(2\sqrt[3]{259}\)

C.

\(\sqrt[3]{259}\)

D.

\(\sqrt[3]{295}\)

😑 View Answer Rough Work
ANSWER :

C.\(\sqrt[3]{259}\)

26.
A shopkeeper finds that when he sells one kind of rice at Rs 50 per kg he loses 20% and when he sells another kind of rice at Rs 72 per kg he gains 20%. If he mixes them in the ratio 3 : 2 and sells the mixture at Rs 64 per kg, then what is his overall gain percentage (correct to one decimal place)?
A.
5.40%
B.
4.10%
C.
4.50%
D.
4.50%
😑 View Answer Rough Work
ANSWER :
B. 4.10%
27.
The sum of a number and its reciprocal is –2. Find the quadratic equation associated with the situation and also the number.
A.
x² + 2x + 1 = 0, x = 1
B.
x² + 2x – 1 = 0, x = –1
C.
x² + 2x + 1 = 0, x = –1
D.
x² – 2x + 1 = 0, x = –1
😑 View Answer Rough Work
ANSWER :
C. x² + 2x + 1 = 0, x = –1
28.
According to right hand thumb rule, _______ represent(s) the direction of current.
A.
the little finger
B.
the fore finger
C.
the middle finger
D.
the thumb
😑 View Answer Rough Work
ANSWER :
D. the thumb
29.
H, N, P, T, W and Y live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 6. H lives on one of the floors above floor number 4. Only three people live between H and N. P lives immediately above N. Only three people live between P and T. W lives on one of the odd numbered floors below T. Who lives immediately above Y?
A.
H
B.
W
C.
N
D.
T
😑 View Answer Rough Work
ANSWER :
A. H
30.

In a right-angled triangle ABC, right-angled at B, if tan A = \(\frac{1}{\sqrt{3}}\), the value of (sin A cos C + cos A sin C) is:

A.

1

B.

\( \frac{1}{4} \)

C.

\( \frac{1}{3} \)

D.

\( \frac{1}{2} \)

😑 View Answer Rough Work
ANSWER :

A. 1