Q. To which of the following family of elements does potassium belong?
2) Alkaline earth metals
3) Noble gases
4) Alkali metals
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
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 -
3) Propane and Butane
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
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 -
Q. What is the dominant chemical present in detergent powder?
1) Hydrochloric acid
2) Sodium carbonate
3) Calcium carbonate
4) Sodium alkyl sulphate
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