Static GK Test: Science and Technology,Test-3

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Static GK Test: Science and Technology, Test-3

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Question 1
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
A
An addition reaction
B
A condensation reaction
C
An elimination reaction
D
An oxidation reaction
Question 2
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
A
6.023 x 1019
B
6.023 x 1023
C
4.284 x 1017
D
1.568 x 103
Question 3
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is
A
0.5 gram of molecule
B
10 gram of molecule
C
1 gram of molecule
D
5 gram of molecule
Question 4
Movement of cell against concentration gradient is known as
A
Active transport
B
Diffusion
C
Passive transport
D
osmosis
Question 5
Night blindness is cause by lack of which vitamin?
A
Vitamin-A
B
Vitamin-B
C
Vitamin-C
D
Vitamin-D
Question 6
Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by
A
Robert brown
B
Theodore Schwann
C
Robert hooke
D
Rudolf virchow
Question 7
Pyorrhea is a disease of the
A
Nose
B
Heart
C
Lungs
D
Gums
Question 8
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
A
Exact concentration of solution is not given
B
Character of semi permeable membrane is not given
C
The flow of solution is not possible through semi permeable membrane
D
All are incorrect
Question 9
Sound travels at the fastest speed in
A
Water
B
Air
C
Vacuum
D
Steel
Question 10
Stars which appear single to the naked eye but are double when seen through a telescope are
A
Binaries
B
Asteroids
C
Quasars
D
Novas and supernovas
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