Question Detail

Atmospheric pressure is measured by

Tonometer
Pyrometer
Barometer
Thermometer

Answer: Option C

1. What is escape velocity ?

Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so it do not go beyond gravitational field of earth.
Escape velocity is the minimum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.
Escape velocity is the maximum velocity with which a body should be projected from the surface of earth so as it goes out of gravitational field of earth and never return to earth.

Answer: Option C

2. Atom is the smallest part of matter which takes part in chemical reactions.

True
False

Answer: Option A

3. What is unit of Viscosity ?

coulomb
newton second per square meter
watt per meter per degree celcius
joule per kilogram per Kelvin

Answer: Option B

Explanation:

coulomb is unit of Electric Charge,

watt per meter per degree celcius is unit of Thermal Conductivity,
joule per kilogram per Kelvin is unit of Specific Heat capacity.

4. Which instrument is used to measure the power of electric circuit ?

Voltmeter
Wattmeter
Wavemeter
Viscometer

Answer: Option B

Explanation:

Voltmeter - is used to measure electric potential difference between two points,
Wavemeter - is used to measure the wavelength of a radiowave,
Viscometer - is used measure viscosity of liquid.