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1]◆washing soda is used in manufacturing of glass ,soap,paper
◆it used to remove the permanent hardness of water
4]the oxides which react with both acid and base to form salt and water is called amphoteric oxide
30) by applying pain grease or oil
by applying zinc coat which is also called as galvanisation
31) steel an alloy of iron react with steam.when steel is used to make hot water tank the hot water present inside the tank produces steam which reacts with steel violently but copper doesnt react with steam therefore copper is used to make hot water tanks instead of steel
◆it used to remove the permanent hardness of water
4]the oxides which react with both acid and base to form salt and water is called amphoteric oxide
30) by applying pain grease or oil
by applying zinc coat which is also called as galvanisation
31) steel an alloy of iron react with steam.when steel is used to make hot water tank the hot water present inside the tank produces steam which reacts with steel violently but copper doesnt react with steam therefore copper is used to make hot water tanks instead of steel
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17.uses of washing soda
1.sodium carbonate (washing soda )is used in glass ,soap and paper industries .
2.it is used in the manufacture of sodium compound such as borax.
18.uses of bleaching powder
1.it is used in bleaching dirty cloth in the laundry ,as a bleaching agent for cotton and linen in the textile industry .
2.it is a strong oxidizing agent Hence used as an oxidizer in men industry .
19. sodium hydroxide ,soda ash
20.oxide of metal which have both acidic as well as basic behaviour are known as amphoteric oxide .
example -almunium oxide , zinc oxide.
22.metal-the metal are gennerally present in solid form at room temperature exception Mercury which is liquid at room temperature .
metal are malleable but non metal are not malleable ,meleable means property through which meatal can be hammered into thin sheet.
1.sodium carbonate (washing soda )is used in glass ,soap and paper industries .
2.it is used in the manufacture of sodium compound such as borax.
18.uses of bleaching powder
1.it is used in bleaching dirty cloth in the laundry ,as a bleaching agent for cotton and linen in the textile industry .
2.it is a strong oxidizing agent Hence used as an oxidizer in men industry .
19. sodium hydroxide ,soda ash
20.oxide of metal which have both acidic as well as basic behaviour are known as amphoteric oxide .
example -almunium oxide , zinc oxide.
22.metal-the metal are gennerally present in solid form at room temperature exception Mercury which is liquid at room temperature .
metal are malleable but non metal are not malleable ,meleable means property through which meatal can be hammered into thin sheet.
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