1) Enzymes are:
A. Inorganic compounds
B. Moulds
C. Micro-organisms
D. Proteins
Answer: Proteins
2) Why does water get cooled in earthen pot and not in a metal or glass pot:
A. Earthen walls are bad conductor so heat does not affect the water
B. Earthen walls of the pot absorb heat of water
C. Earthen walls have pores and water gets evaporated through pores and evaporation takes heat from the water
D. None of the above
Answer: Earthen walls have pores and water gets evaporated through pores and evaporation takes heat from the water
3) The element of Electric stove is made of
A. Copper
B. Invar
C. Magnalium
D. Nicrome
Answer: Nicrome
4) The method of protecting iron from rusting, by coating a thin layer of Zinc is called
A. Galvanizing
B. Rancidity
C. Alloy
D. Pulverizing
Answer : Galvanizing
5) Brass gets discoloured in air because of the presence of which of the following gases in air?
A. Oxygen
B. Hydrogen sulphide
C. Carbon dioxide
D. Nitrogen
Answer: Hydrogen sulphide
6) Chlorophyll is a naturally occurring chelate compound in which central metal is
A. copper
B. magnesium
C. iron
D. calcium
Answer: magnesium
7) What is the SI unit of Young’s modulus of elasticity?
A. Henry
B. Hertz
C. Pascal
D. Dioptre
Answer: Pascal
8) The chemical used for cooling in refrigeration is :
A. CO2
B. NH4CI
C. NH4OH
D. Liquified ammonia
Answer: NH4OH
9) Crops that arer grown for animal feed are called
A. Forage crops
B. Monsoon crops
C. Cash crops
D. Wetland crops
Answer: Forage crops
10) Which of the following is the weakest force?
A. Gravitational force
B. Electromagnetic Force
C. Nuclear Force
D. Electrostatic force
Answer: Gravitational force
11) Which of the following elements is least electronegative?
A. Sodium
B. Oxygen
C. Magnesium
D. Calcium
Answer: Sodium
12) Which of the following is used in pencils?
A. Graphite
B. Silicon
C. Charcoal
D. Phosphorous
Answer: Graphite
13) Which of the following is a non metal that remains liquid at room temperature?
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
Answer: Bromine
14) The fuse in an electric circuit is connected in
A. parallel to live
B. parallel to neutral
C. series with live
D. series with neutral
Answer: series with lives
15) Which of the following diseases is caused by virus?
A. Typhoid
B. Tuberculosis
C. Malaria
D. Small pox
Answer: Small Pox
16) Flowers are bright coloured and scented in order to attract insects and help
A. Dispersal of seed
B. Cane-sugar
C. Pollination
D. Nothing of the above
Answer: Pollination
17) “Histology” is the study of:
A. Bones
B. Coins
C. Tissues
D. History
Answer: Tissues
18) Which of the following in the human body is popularly called the Adam’s apple?
A. Adrenal
B. Liver
C. Thyroid
D. Thymus
Answer: Thyroid
19) Which of the following metals forms an amalgam with other metals?
A. Tin
B. Mercury
C. Lead
D. Zinc
Answer: Mercury
20) Washing soda is the common name for
A. Sodium carbonate
B. Calcium bicarbonate
C. Sodium bicarbonate
D. Calcium carbonate
Answer: Sodium carbonate
A. Inorganic compounds
B. Moulds
C. Micro-organisms
D. Proteins
Answer: Proteins
2) Why does water get cooled in earthen pot and not in a metal or glass pot:
A. Earthen walls are bad conductor so heat does not affect the water
B. Earthen walls of the pot absorb heat of water
C. Earthen walls have pores and water gets evaporated through pores and evaporation takes heat from the water
D. None of the above
Answer: Earthen walls have pores and water gets evaporated through pores and evaporation takes heat from the water
3) The element of Electric stove is made of
A. Copper
B. Invar
C. Magnalium
D. Nicrome
Answer: Nicrome
4) The method of protecting iron from rusting, by coating a thin layer of Zinc is called
A. Galvanizing
B. Rancidity
C. Alloy
D. Pulverizing
Answer : Galvanizing
5) Brass gets discoloured in air because of the presence of which of the following gases in air?
A. Oxygen
B. Hydrogen sulphide
C. Carbon dioxide
D. Nitrogen
Answer: Hydrogen sulphide
6) Chlorophyll is a naturally occurring chelate compound in which central metal is
A. copper
B. magnesium
C. iron
D. calcium
Answer: magnesium
7) What is the SI unit of Young’s modulus of elasticity?
A. Henry
B. Hertz
C. Pascal
D. Dioptre
Answer: Pascal
8) The chemical used for cooling in refrigeration is :
A. CO2
B. NH4CI
C. NH4OH
D. Liquified ammonia
Answer: NH4OH
9) Crops that arer grown for animal feed are called
A. Forage crops
B. Monsoon crops
C. Cash crops
D. Wetland crops
Answer: Forage crops
10) Which of the following is the weakest force?
A. Gravitational force
B. Electromagnetic Force
C. Nuclear Force
D. Electrostatic force
Answer: Gravitational force
11) Which of the following elements is least electronegative?
A. Sodium
B. Oxygen
C. Magnesium
D. Calcium
Answer: Sodium
12) Which of the following is used in pencils?
A. Graphite
B. Silicon
C. Charcoal
D. Phosphorous
Answer: Graphite
13) Which of the following is a non metal that remains liquid at room temperature?
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
Answer: Bromine
14) The fuse in an electric circuit is connected in
A. parallel to live
B. parallel to neutral
C. series with live
D. series with neutral
Answer: series with lives
15) Which of the following diseases is caused by virus?
A. Typhoid
B. Tuberculosis
C. Malaria
D. Small pox
Answer: Small Pox
16) Flowers are bright coloured and scented in order to attract insects and help
A. Dispersal of seed
B. Cane-sugar
C. Pollination
D. Nothing of the above
Answer: Pollination
17) “Histology” is the study of:
A. Bones
B. Coins
C. Tissues
D. History
Answer: Tissues
18) Which of the following in the human body is popularly called the Adam’s apple?
A. Adrenal
B. Liver
C. Thyroid
D. Thymus
Answer: Thyroid
19) Which of the following metals forms an amalgam with other metals?
A. Tin
B. Mercury
C. Lead
D. Zinc
Answer: Mercury
20) Washing soda is the common name for
A. Sodium carbonate
B. Calcium bicarbonate
C. Sodium bicarbonate
D. Calcium carbonate
Answer: Sodium carbonate
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