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1
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The commercial unit of electrical energy is kilowatt-hour (kWh), which is equal to
A
3.6 × 106 J
B
3.6 × 103 J
C
103 J
D
1 J
2
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following statements regarding a current-carrying solenoid is not correct?
A
The magnetic field inside the solenoid is uniform.
B
The current-carrying solenoid behaves like a bar magnet.
C
The magnetic field inside the solenoid increases with increase in current.
D
If a soft iron bar is inserted inside the solenoid, the magnetic field remains the same. 
3
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
An object is made of two equal parts by volume; one part has density ρ0, and the other part has density 2ρ0. What is the average density of the object?
A
3ρ0
B
$\rm \frac{3}{2}\rho_0$
C
ρ0
D
$\rm \frac{1}{2}\rho_0$
4
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
A pressure cooker cooks food faster by
A
increasing the boiling point of water
B
decreasing the boiling point of water
C
increasing the melting point of water
D
decreasing the melting point of water
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