4800J
1200J
480J
202J
Correct answer is C
Q = mcθ = 200 x 0.4 x 6 = 480J
In an experiment in which molten naphthalene is allowed to cool, the cooling curve i n the figu...
When a number of identical small magnets are arranged in a line, the strength of the resultant magne...
An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of t...
An ammeter of resistance 5Ω has a full-scale deflection when a current of 50 mA flows in it. The v...
A steel needle floating on water, sinks when kerosine is added to the water. This is because the ker...
Which of the following factors does not affect the electric resistance of wire? ...
in a pure semiconductor, the number of electrons in the conduction band is ...
In the above circuit diagrams A is the ammeter and V is the Voltmeter. Which of the circuits is corr...
A device used to prevent wearing away of the make and-brake contacts of an induction coil is called ...
In the formation of sea breeze. wind blows from ...
Situational Judgement Questions and Answers
Abstract Reasoning Questions and Answers
Typing Speed and Accuracy Test
Puzzles Questions and Answers
Quantitative Reasoning Questions and Answers
Nigeria General Knowledge Questions and Answers
Data Interpretation Questions and Answers
Verbal Reasoning Questions and Answers
Personality Test
Microsoft Office Questions and Answers
Spatial Reasoning Questions and Answers
Logical Reasoning Questions and Answers
Numerical Reasoning Questions and Answers
See all →