Question Detail

Name of the instrument to measure atomspheric pressure ?

Barometer
Barograph
Bolometer
Callipers

Answer: Option A

Explanation:

Barograph - Recordings of atmospheric pressure,
Bolometer - Used to measure heat radiation,
Callipers - Used to measure inner and outer diameters of bodies.

1. Siphon will fail to work if

both its limbs are of unequal length
the temperature of the liquids in the two vessels are the same
the level of the liquid in the two vessels are at the same height
the densities of the liquid in the two vessels are equal

Answer: Option C

2. Who discovered Atom ?

Madam Curie
James Chadwick
Rutherford
John Dalton

Answer: Option D

Explanation:

John Dalton discovered Atom in 1808,

Madam Curie discovered Radium in 1898,

James Chadwick discovered Neutron in 1932,

Rutherford discovered Proton in 1919.

3. Thomas Alva Edison invented

Cinema
Cine Camera
Computer
Cinematograph

Answer: Option D

Explanation:

Thomas Alva Edison of USA invented Cinematograph in 1891,

Cinema was invented by A.L. and J.L. Lumiere of France in 1895,

Cine Camera was invented by Friese-Greene of Britain in 1889,

Computer was invented by Charles Babbage of Britain in 1834, he is also known as Father of Computer.

4. Solar cell converts

Sound energy into electrical energy
Electrical energy into mechanical energy
Solar energy into electrical energy
Electrical energy into light energy

Answer: Option C

5. Harry Brearley has invented

Electric iron
Electromagent
Stainless Steel
Gramophone

Answer: Option C

Explanation:

Harry Brearley of England has invented Stainless Steel in 1913,

Electric iron has been invented by H.W. Seeley of USA in 1882,

Electromagent has been invented by W.Sturgeon of England in 1824,

Gramophone has been invented by T.A. Edison of USA in 1878.