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SSC General science MCQ GK Questions and Answers

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SSC UPSC general science MCQ GK Questions and Answers for all competitive exams UPSC SSC Bank Exams MCQ and Entrance exams Preparation Online free Gk Questions practice

 

61.
Currency coins are alloys of different metals. One metal that is present in all coins is

a
gold
b
zinc
c
silver
d
copper
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62.
A common fluorescent tube contains

a
sodium vapour
b
mercuric oxide and neon
c
argon at low pressure
d
mercury vapour at low pressure
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63.
The ammonium ion is

a
Square pyramidal
b
Tetrahedral
c
Square planar
d
Trigonal pyramidal
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64.
The total number of stars in the universe is believed to be

a
1010
b
1015
c
1011
d
1021
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65.
The most important cardiac stimulant is

a
paracetamol
b
cimetidine
c
digoxin
d
penicillin
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66.
The most abundant carbohydrate present in blood is

a
cellulose
b
starch
c
lactose
d
glucose
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67.
Which of the following waves are diffracted by an obstacle of size 1 cm?

a
Ultrasonic waves
b
X-rays
c
Light waves
d
Sound waves
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68.
A hybrid propellant contains

a
liquid fuel and liquid oxidizer
b
solid fuel and liquid oxidizer
c
liquid fuel and solid oxidizer
d
solid fuel and solid oxidizer
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69.
In old age stiffness of joints is due to the

a
enlargement of bones
b
decrease in synovial fluid
c
hardening of bones
d
inefficiency of muscles
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