Science & Mathematics Topics
School level (Class 6–12) — Science & Mathematics
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Physics
Chemistry
Mathematics
Biology Option
Full Syllabus Mock Topics
quiz Questions
Q1
SI unit of force is
Joule
Pascal
Newton
Watt
Explanation
Force is measured in newton in SI system.
Q2
SI unit of work is
Watt
Joule
Pascal
Newton
Explanation
Work and energy are measured in joule.
Q3
SI unit of power is
Joule
Watt
Pascal
Newton
Explanation
Power is rate of doing work, measured in watt.
Q4
Speed of light in vacuum is approximately
Newton
Joule
3 x 10^8 m/s
Watt
Explanation
Light travels nearly 300,000 km/s in vacuum.
Q5
Acceleration due to gravity on Earth is about
Newton
Joule
Watt
9.8 m/s^2
Explanation
Standard gravitational acceleration is around 9.8 m/s^2.
Q6
The law of inertia was given by
Newton first law
Newton
Joule
Watt
Explanation
Newton first law describes inertia.
Q7
The instrument used to measure electric current is
Newton
Watt
Joule
Ammeter
Explanation
Ammeter is connected in series to measure current.
Q8
The instrument used to measure potential difference is
Joule
Voltmeter
Newton
Watt
Explanation
Voltmeter is connected in parallel to measure voltage.
Q9
The pH value of neutral solution is
Newton
Watt
7
Joule
Explanation
Pure water at 25 degree C has pH 7.
Q10
Chemical symbol of sodium is
Joule
Watt
Na
Newton
Explanation
Na comes from Latin Natrium.