Q.1
Which of the following has a least penetrating power?
Q.2
The isotope of uranium capable of sustaining chain reaction is
Q.3
One Joule is equal to
Q.4
Kilowatt is a unit to measure:
Q.5
Electric current is measured by:
Q.6
Mesons are found in
Q.7
Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?
Q.8
Which among the following is a positively charged particle emitted by a radioactive element?
Q.9
Atoms are composed of:
Q.10
Very small time intervals are accurately measured by
Q.11
Detergents used for cleaning clothes and utensils contain?
Q.12
The age of most ancient geological formations is estimated by
Q.13
A chronometer measures:
Q.14
One kilometer is equal to how many miles?
Q.15
Kilohertz is a unit which measures
Q.16
Which of the following is used for removing air bubbles from glass during its manufacture?
Q.17
One horse power is equal to
Q.18

Electric current is measure by

  • commutator
  • anemometer
  • ammeter
  • voltmeter
Q.19

Brass gets discoloured in air because of the presence of which of the following gases in air?

  • Oxygen
  • Hydrogen sulphide
  • Carbon dioxide
  • Nitrogen
Q.20

Which of the following is a non metal that remains liquid at room temperature?

  • Phosphorous
  • Bromine
  • Chlorine
  • Helium
Q.21

Chlorophyll is a naturally occurring chelate compound in which central metal is

  • copper
  • magnesium
  • iron
  • calcium
Q.22

Which of the following is used in pencils?

  • Graphite
  • Silicon
  • Charcoal
  • Phosphorous
Q.23

Which of the following metals forms an amalgam with other metals?

  • Tin
  • Mercury
  • Lead
  • Zinc
Q.24

'Bar' is the unit of

  • temperature
  • heat
  • atmospheric pressure
  • current
Q.25

The wavelength of X-rays is of the order of

  • 10 micron
  • 1 angstrom
  • 1 cm
  • 1 m
Q.26

Which of the following has a least penetrating power?

  • All have same penetrating power
  • Beta Particles
  • Alpha particles
  • Gamma rays
Q.27

One Joule is equal to

  • 105 ergs
  • 103 ergs
  • 107 ergs
  • 1011 ergs
Q.28

Which of the following rays are more penetrating?

  • Beta rays
  • Alpha rays
  • Gamma rays
  • X-rays
Q.29

In an atomic nucleus, neutrons and protons are held together by

  • gravitational forces
  • exchange forces
  • coulombic forces
  • magnetic forces
Q.30

Mesons are found in

  • Laser beam
  • X-rays
  • Gamma rays
  • Cosmic rays
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