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Question 1
The virus is
A
nucleic acid and protein
B
protein and lipid
C
carbohydrate
D
lipid and carbohydrate
Question 2
According to the modern theory of nature of light, the light has
A
wave nature only
B
both wave and particle (dual) nature
C
neither particle nature nor wave nature
D
particle nature only
Question 3
Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?  
A
Carbon, hydrogen, nitrogen
B
Hydrogen, oxygen, sodium
C
Carbon, hydrogen, potassium
D
Oxygen, calcium, phosphorus
Question 4
Which of the following are true about speed of sound?
(i) Sound propagates through a medium at a finite speed.
(ii) The speed of sound decreases when we go from solid to gaseous state.
(iii) Speed of sound increases with increase in temp.
A
(i) & (ii)
B
(i) & (iii)
C
(i), (ii) & (iii)
D
only (i)
Question 5
In the human body, the appendix is attached to
A
the stomach
B
the small intestine
C
the gall bladder
D
the large intestine
Question 6
Magnetic resonance imaging is based on the phenomenon of
A
diamagnetism of human tissues
B
electron paramagnetic resonance
C
nuclear magnetic resonance
D
electron spin resonance
Question 7
Which of the following copper alloys is used for the manufacture of springs and suspension filaments in electrical instruments?
A
German silver
B
Aluminium bronze
C
Phosphor bronze
D
Bronze
Question 8
When a sound wave goes from one medium to another, the quantity that remains unchanged is
A
Amplitude
B
Speed
C
Wavelength
D
Frequency
Question 9
Which of the following can be used for removal of stains of rust on clothes? 1. H2O2 2. Oxalic acid 3. Petrol 4. Alcohol
A
1 and 2
B
1, 2, 3 and 4
C
2 only
D
3 and 4
Question 10
Which one of the following statements is not true about cosmic rays?
A
They originate from the sun.
B
They have very high frequency.
C
They are made of highly energetic charged particles.
D
They have very high wavelength.
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