HPAS 2014 Science Topic-Wise Solutions
Question 83
The World’s highest ground based telescopic observatory is located in:
- (a) Colombia
- (b) India
- (c) Nepal
- (d) Switzerland
Correct Answer: (b) India
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Question 84
The hormone insulin is a:
- (A) Glycolipid
- (B) Fatty acid
- (C) Peptide
- (D) Sterol
Correct Answer: (C) Peptide
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Question 85
The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by:
- (A) a decrease in the supply of oxygen
- (B) minor wear and tear of muscles fibres
- (C) the depletion of glucose
- (D) the accumulation of lactic acid
Correct Answer: (D) the accumulation of lactic acid
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Question 86
Which one of the following agricultural practices is eco-friendly?
- (A) Organic farming
- (B) Shifting cultivation
- (C) Cultivation of high yielding varieties
- (D) Growing plants in glass-houses
Correct Answer: (A) Organic farming
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Question 87
According to the World Health Organization, the disease which causes the death of the largest number of people today is:
- (A) AIDS
- (B) Tuberculosis
- (C) Malaria
- (D) Ebola
Correct Answer: (B) Tuberculosis
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Question 88
The normal temperature of human body in Kelvin scale is:
- (A) 280
- (B) 290
- (C) 300
- (D) 310
Correct Answer: (D) 310
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Question 89
The only snake that builds a nest is:
- (A) Chain viper
- (B) King cobra
- (C) Krait
- (D) Saw-scaled viper
Correct Answer: (B) King cobra
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Question 90
Which one of the following does not contain silver?
- (A) Horn Silver
- (B) German Silver
- (C) Ruby Silver
- (D) Lunar Silver
Correct Answer: (B) German Silver
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Question 91
Aluminium surfaces are often ‘anodized’, this means the deposition of a layer of:
- (A) Chromium oxide
- (B) Aluminium oxide
- (C) Nickel oxide
- (D) Zinc oxide
Correct Answer: (B) Aluminium oxide
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Question 92
Which one of the following polymers is widely used for making bullet proof material?
- (A) Polyvinyl chloride
- (B) Polyamides
- (C) Polyethylene
- (D) Polycarbonates
Correct Answer: (D) Polycarbonates
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Question 93
When a CD compact disc use in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of:
- (A) Reflection and diffraction
- (B) Reflection and transmission
- (C) Diffraction and transmission
- (D) Refraction, diffraction and transmission
Correct Answer: (D) Refraction, diffraction and transmission
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Question 94
Which one of the following does a TV remote control unit use to operate a TV set?
- (A) Light Waves
- (B) Sound Waves
- (C) Micro Waves
- (D) Radio Waves
Correct Answer: (D) Radio Waves
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Question 95
The working principle of a washing machine is:
- (A) Centrifugation
- (B) Dialysis
- (C) Reverse osmosis
- (D) Diffusion
Correct Answer: (A) Centrifugation
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Question 96
A fuse is used in main electric supply as a safety device. Which one of the following statements about the fuse is correct?
- (A) It is connected in parallel with the main switch
- (B) It is made mainly from silver alloys
- (C) It must have a low melting point
- (D) It must have a very high resistance
Correct Answer: (C) It must have a low melting point
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Question 97
A simple machine helps a person in doing:
- (A) Less work
- (B) the same amount of work with lesser force
- (C) the same amount of work slowly
- (D) the same amount of work much faster
Correct Answer: (B) the same amount of work with lesser force
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Question 98
Domestic electrical wiring is basically a:
- (A) Series connection
- (B) Parallel connection
- (C) Combinations of series and parallel connection
- (D) Series connection within each room and parallel connection elsewhere
Correct Answer: (B) Parallel connection
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Question 99
The most widely used antacid is:
- (A) Cetrizine
- (B) Iproniazid
- (C) Chlorpheniramine
- (D) Zantac
Correct Answer: (D) Zantac
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Question 100
Which of the following drugs reduces fever?
- (A) Analgesic
- (B) Antipyretic
- (C) Antibiotic
- (D) Tranquilizer
Correct Answer: (B) Antipyretic
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