Q. In universal Indicators, red colour shows a pH of -
1) 0 to 3
2) 4 to 7
3) 12 to 14
4) 8 to 11
Q. A group of more than three atoms carrying a charge is known as .......... ion.
1) Di atomic
2) Mono atomic
3) Tri atomic
4) Polyatomic
Q. Which of the following is a use of ethanol?
1) All of the options
2) Manufacturing paints
3) In alcoholic drinks
4) In cough syrups
Q. The cooking gas (LPG) mainly consists of -
1) Ethene
2) Propene
3) Propane and Butane
4) Ethyne
Q. When a decomposition reaction is carried out by heating, it is called -
1) Thermal decomposition
2) Electrolytic decomposition reaction
3) Photo decomposition reaction
4) Non-electrolytic decomposition reaction
Q. Which of the following is a form of calcium carbonate?
1) Washing soda
2) Baking soda
3) Limestone
4) Table Salt
Q. Which of the following statements is true about natural rubber?
1) It is a natural polymer and possesses elastic properties
2) It is an artificial polymer and possesses elastic properties
3) It is not a polymer but possesses elastic properties
4) It is a natural polymer but does not possess elastic properties
Q. Plaster of Paris is a product of -
1) Magnesium
2) Aluminium
3) Calcium
4) Sodium
Q. What is the dominant chemical present in detergent powder?
1) Hydrochloric acid
2) Sodium carbonate
3) Calcium carbonate
4) Sodium alkyl sulphate
Q. Blue litmus paper turns ......... on contact with an acidic solution.
1) red
2) brown
3) green
4) yellow
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