HPAS 2015 Science Topic-Wise Solutions
Question 11
When a body is taken from the earth to moon:
- (A) Mass change but weight remain the same
- (B) Weight change but mass remain the same
- (C) Both weight and mass change
- (D) Both weight and mass remain the same
Correct Answer: (b) Weight change but mass remain the same
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Question 12
Decibel is used to measure the intensity field of:
- (A) Magnetic field
- (B) Sound
- (C) Light
- (D) Heat
Correct Answer: (b) Sound
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Question 13
Which of the following vegetable oils does not contain essential fatty acids?
- (A) Sunflower oil
- (B) Mustard oil
- (C) Coconut oil
- (D) Groundnut oil
Correct Answer: (a) Sunflower oil
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Question 14
Usually fuels on burning cause pollution. Which one of the following fuels causes minimum environmental pollution?
- (A) Diesel
- (B) Coal
- (C) Hydrogen
- (D) Kerosene
Correct Answer: (c) Hydrogen
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Question 15
Vegetables are easily perishable because of their high content of:
- (A) Sugars
- (B) Water
- (C) Vitamins
- (D) Enzymes
Correct Answer: (b) Water
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Question 16
Sweat mainly serves to eliminate:
- (A) Water, NaCl
- (B) NaCl, Fats
- (C) Dirt, water
- (D) Serum, Water
Correct Answer: (a) Water, NaCl
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Question 17
In a poultry unit the factor most influencing the cost is the cost of:
- (A) Feed
- (B) Transportation
- (C) Chicks
- (D) Medicines
Correct Answer: (a) Feed
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Question 18
Bombyx mori is a:
- (A) Fish
- (B) Silkworm
- (C) Ringworm
- (D) Moth
Correct Answer: (b) Silkworm
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Question 19
Which of the following statements is correct?
- (A) Wheat bran is rich in carbohydrates
- (B) Fungal fermentation of rice is used for the preparation of alcoholic drinks
- (C) Rice has antibiotic properties
- (D) Wheat contains 80-85% carbohydrates
Correct Answer: (b) Fungal fermentation of rice is used for the preparation of alcoholic drinks
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Question 20
A pressure cooker works on the principle of:
- (A) Elevation of boiling point of water by application of pressure
- (B) Making the food-grains inside softer
- (C) Making the food-grains softer by application of pressure and temperature
- (D) Keeping the food-grains inside steam for a longer time
Correct Answer: (a) Elevation of boiling point of water by application of pressure
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