The recent atomic weight scale is based on
1 1H1
2 1H2
3 6C12
4 8O16
tea will coll most easily in a:
Polythene is industrially prepared by the polymerization of 1 Methane 2 Styrene 3 Acetylene 4 Ethylene
3 Answers Amna Industries, HFI,
In which year the solar observatory in kodikanal founded?
Which of the following minerals has the lower numerical hardness value? 1 Talc 2 Gypsum 3 Apatite 4 Topaz
Long distance photography is facilitated by 1 Visible light 2 X-rays 3 Infrared rays 4 Ultraviolet rays
The ore of which of the following metals can be concentrated by hydraulic washing? 1 Tin 2 Sodium 3 Iron 4 Manganese
Enriched uranium used in a nuclear reactor is 1 Uranium freed of all impurities 2 Uranium treated with radiation 3 Uranium alloyed with aluminum 4 Uranium with a high percentage of a particular isotope
The average salinity of sea water is 1 2% 2 2.5% 3 3% 4 3.5%
Cooking oil can be converted into vegetables ghee by the process of 1 Oxidation 2 Hydrogenation 3 Distillation 4 Crystallization
Superphosphate fertilizer is prepared by the reaction between 1 Calcium phosphate and Sulphuric hydroxide 2 Sodium phosphate and Sodium nitrate 3 Magnesium phosphate and Sodium nitrate 4 Sodium sulphate and Phosphoric acid
2 Answers Central Police Forces, Odisha Police,
What are reflecting nebulae?
The material used for bleaching paper pulp is 1 Chlorine 2 Caustic soda 3 Sodium hypochlorite 4 Lime