WBJEE-JENPAS-UG SERIES Physical-sciences
Theory Of Equations
8 previous year questions.
Volume: 8 Ques
Yield: Medium
High-Yield Trend
5
2023 3
2022 Chapter Questions 8 MCQs
01
PYQ 2022
medium
physical-sciences ID: wbjee-je
When a bullet is fired from a gun, the gun recoils backward. This phenomenon is an example of
1
Conservation of energy
2
Newton's third law of motion.
3
Conservation of momentum
4
Law of force.
02
PYQ 2022
medium
physical-sciences ID: wbjee-je
A boy starts running with a speed of 1 m / s from a corner of a square of sides 20m along its periphery. What will be his displacement after 35 second ?
1
40m
2
25m
3
35m
4
50 m
03
PYQ 2022
medium
physical-sciences ID: wbjee-je
A train track is laid with 100 m pieces of steel rails. If coefficient of linear expansion of steel is 11 x 10-6, what must be the minimum gap between two pieces of rails so that the train can run safely between 0°C and 50°C ?
1
5.5mm
2
5.5 cm
3
2.75 cm
4
11 cm
04
PYQ 2023
medium
physical-sciences ID: wbjee-je
Denatured spirit contains
1
10% methyl alcohol and 90% ethyl alcohol.
2
30% methyl alcohol and 70% ethyl alcohol.
3
90% methyl alcohol and 10% ethyl alcohol.
4
30% ethyl alcohol and 70% methyl alcohol.
05
PYQ 2023
medium
physical-sciences ID: wbjee-je
German Silver contains
1
Cu, Zn
2
Cu, Ni
3
Cu, Ag, Ni
4
Cu, Zn, Ni
06
PYQ 2023
medium
physical-sciences ID: wbjee-je
Which is used as a cryogenic agent?
1
liquid O2
2
liquid CO2
3
liquid N2
4
liquid H2
07
PYQ 2023
medium
physical-sciences ID: wbjee-je
The volume of 64 g O2 at STP is
1
11.2 lit
2
22.4 lit
3
44.8 lit
4
33.6 lit
08
PYQ 2023
medium
physical-sciences ID: wbjee-je
Ring test ascertains
1
H2SO4
2
HNO3
3
HCl
4
CH3COOH