Score: 0 / 25
Incorrect As: 0
Q 26: Which type of material is used in a lead pencil:
A) Silicon
B) Germanium
C) Graphite
D) Rubber
Q 27: Which material is used to make electrodes in dry batteries?
A) Graphite
B) Copper
C) Aluminum
D) Iron
Q 28: Which substance is used in match sticks?
A) Sulphur
B) Zinc
C) Iron
D) Nitric Acid
Q 29: Which metal is used in the fluorescent tubes and bulb of a thermometer?
A) Copper
B) Iron
C) Mercury
D) None of these
Q 30: Which o f the following is a non-metallic mineral?
A) Bauxite
B) Gypsum
C) Magnesium
D) Manganese
Q 31: Which material is used in making chips containing micro-circuits for computers and other electronic equipment?
A) Copper
B) Silicon
C) Aluminum
D) Chromium
Q 32: Which among the following is the best conductor of electricity?
A) Copper
B) Silver
C) Aluminum
D) Steel
Q 33: Which one of the following is a metal?
A) Mercury
B) Gypsum
C) Limestone
D) Granite
Q 34: Heating element of an electric heater is made up of:
A) Tungsten
B) Graphite
C) Chromium
D) Nichrome
Q 35: Which of the following is a non- metal that remains in liquid form at room temperature?
A) Phosphorus
B) Bromine
C) Chlorine
D) Helium
Q 36: Which is the hardest?
A) Iron
B) Diamond
C) Aluminum
D) None of these
Q 37: Pure gold is carat gold:
A) 12 carat
B) 14 carat
C) 22 carat
D) 24 carat
Q 38: Gold, silver, and copper are what type of metal?
A) Hard
B) Pure
C) Natural
D) Coinage
Q 39: Which acid is found in lemon?
A) Hydrochloric Acid
B) Citric Acid
C) Acetic Acid
D) Sulfuric Acid
Q 40: Which acid is used in Batteries?
A) HCL
B) H2O4
C) HNO
D) None of these
Q 41: Acid rain contains high levels of:
A) Oxalic Acid
B) Sulfuric Acid
C) Nitric Acid
D) Both B and C
Q 42: Car batteries use what that reacts with lead plates to generate electricity.
A) Sulphuric Acid
B) Nitric Acid
C) Hydrochloric Acid
D) None of these
Q 43: Base alkaline used in batteries ______.
A) Calcium hydroxide
B) Sodium hydroxide
C) Potassium hydroxide
D) Magnesium hydroxide
Q 44: From which source is Formic acid obtained?
A) Plants
B) Synthetic processes
C) Ants
D) Fungi
Q 45: Which acid is used in the fermentation process of food?
A) Acetic Acid
B) Lactic Acid
C) HCL
D) None of these
Q 46: The main gases that produce acid rain are:
A) Sulphur dioxide and nitrogen oxides
B) Methane and hydrogen
C) Carbon dioxide
D) None of these
Q 47: Acid precipitation results from human modifications of:
A) The nitrogen and sulfur cycles
B) The carbon and sulfur cycles
C) The carbon and phosphorus cycles
D) The carbon and nitrogen cycles
Q 48: The cause of soil pollution is:
A) Ozone
B) Acid rain
C) Air freshener
D) None of these
Q 49: Which product is formed when an acid reacts with a base?
A) Salt and Water
B) Sugar
C) Oxygen gas
D) Hydrogen gas
Q 50: Which of the following reacts with both acid and base?
A) Amphoteric
B) Ester
C) Keton
D) Aldehyde