Question - 1
CHEMISTRY :
Bar is a unit of
pressure
force
energy
frequency
None of the Above
Answer- A
Question - 2
CHEMISTRY :
‘Misch metal’ is widely used in manufacture of which of the following
material of car brake
smoke detectors
cigarette lighters
emergency lights
None of the Above
Answer- C
Question - 3
CHEMISTRY :
Which one of the following is not a mixture?
air
mercury
milk
cement
None of the Above
Answer- B
Question - 4
CHEMISTRY :
Among the given nutrients, Milk is the poor source of
calcium
protein
carbohydrate
vitamin C
None of the Above
Answer- D
Question - 5
CHEMISTRY :
Oxygen and ozone are
allotropes
isomers
isotopes
isobars
None of the Above
Answer- A
Question - 6
CHEMISTRY :
Which of the following is an element?
alumina
brass
graphite
silicon
None of the Above
Answer- D
Question - 7
CHEMISTRY :
Which one among the following is the heaviest?
1 mole of water molecules
1 mole of ammonia molecules
1 mole of sodium atoms
1 mole of hydrogen molecules
None of the Above
Answer- C
Question - 8
CHEMISTRY :
What is the element present in Urea?
C,H,O
C,N,O
C,N,H
C,O,N,H
None of the Above
Answer- D
Question - 9
CHEMISTRY :
Neutron is discovered by
J.J. Thompson
Chadwick
Rutherford
Priestley
None of the Above
Answer- B
Question - 10
CHEMISTRY :
The constituent particle of a nucleus in an atom are
electron and proton
proton and neutron
electron and neutron
electron, proton and neutron
None of the Above
Answer- B
Question - 11
CHEMISTRY :
Which of the following has highest frequency?
Cosmic rays
X - rays
Radio waves
Micro waves
None of the Above
Answer- A
Question - 12
CHEMISTRY :
Which electromagnetic radiation is emitted by radioactive substances?
Gama- rays
Radio waves
micro waves
x- rays
None of the Above
Answer- A
Question - 13
CHEMISTRY :
Wave length of X – rays is of the order of
1mm
1cm
1 micron
1 angstrom
None of the Above
Answer- D
Question - 14
CHEMISTRY :
Which one of the following elements has two electrons in the K – shell?
Hydrogen
Helium
Neon
Sulphur
None of the Above
Answer- B
Question - 15
CHEMISTRY :
A radioactive substance has a half-life of four months. Three-fourth of the substance would decay in
3 months
4 months
8 months
12 months
None of the Above
Answer- C
Question - 16
CHEMISTRY :
Which one of the following is not radioactive?
Astanine
Francium
Tritium
Zirconium
None of the Above
Answer- D
Question - 17
CHEMISTRY :
Which one of the following elements is essential for construction in nuclear reactors?
Cobalt
Nickel
Zirconium
Tungsten
None of the Above
Answer- C
Question - 18
CHEMISTRY :
The most common lanthanide is
Lanthanum
Cerium
Plutonium
Samarium
None of the Above
Answer- B
Question - 19
CHEMISTRY :
Elements of d-block are called
Transition element
Transuranic elements
Metals
Metalloids
None of the Above
Answer- A
Question - 20
CHEMISTRY :
Which has the highest electron affinity?
F
Cl
Br
I
None of the Above
Answer- B
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