|
Page-14 |
|||
Chemistry |
|||
| 196)The type of water which does not lather easily is called is called | |||
| hard water | soft water | ||
| heavy water | mineral water | ||
| Answer : | |||
| |
|||
| 197)The gas used for inflating balloons is | |||
| oxygen | helium | ||
| nitrogen | hydrogen | ||
| Answer : | |||
| |
|||
| 198)Inert gases are | |||
| not stable | chemically very active | ||
| mixable in water | chemically unreactive | ||
| Answer : | |||
| |
|||
| 199)Indigo is used in the | |||
| perfumery industry | dyeing industry | ||
| pharmaceutical industry | food industry | ||
| Answer : | |||
| |
|||
| 200)Linseed cake is used for | |||
| feeding cattle | washing purpose | ||
| filling crackers | feeding newborns | ||
| Answer : | |||
| |
|||
| 201)The process of leaching involves | |||
| filtration | evaporation | ||
| the removal of dark colours | dissolving out a soluble compound | ||
| Answer : | |||
| |
|||
| 202)The main use of magnesia is as a (an) | |||
| mild laxative | painkiller | ||
| antibiotic | antiseptic | ||
| Answer : | |||
| |
|||
| |
|||
| 203)Denatured alcohol | |||
| is a very pure form of alcohol | contains coloured impurities | ||
| is unfit for drinking as it contains poisonous substances | is sweet to test | ||
| Answer : | |||
| |
|||
| 204)Ehtyl alcohol is commonly made unfit for drinking by by the addition of | |||
| methyl alcohol | chloroform | ||
| potassium chloride | potassium cyanide | ||
| Answer : | |||
| |
|||
| 205)Mordants are substances that | |||
| have the capacity of increasing the intensity of colour | have a bleaching action | ||
| are very hard solids | fix colours on fabrics | ||
| Answer : | |||
| |
|||
| 206)The sugar unit present in DNA is | |||
| sucrose | glucose | ||
| deoxyribose | fructose | ||
| Answer : | |||
| |
|||
| 207)Morphine is a drug under the classification | |||
| narcotics | antimalarials | ||
| antiseptics | antibiotics | ||
| Answer : | |||
| |
|||
| 208)The poisonous substance that is the main constituent of tobacco is | |||
| aspirin | morphine | ||
| nicotine | reserpine | ||
| Answer : | |||
| |
|||
| 209)The main active constituent of tea and coffee is | |||
| aspirin | morphine | ||
| caffeine | nicotine | ||
| Answer : | |||
| |
|||
| 210)Containers for carrying strong acids are made of | |||
| brass | copper | ||
| platinum | lead | ||
| Answer : | |||
| |
|||
 |
||