Which of the solid does not contain covalent bond________________?
Which of the solid does not contain covalent bond________________?
A. Copper
B. Ice
C. Diamond
D. Graphite
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When the radiation of light is passed through a prism, it undergoes __________?
When the radiation of light is passed through a prism, it undergoes __________?A. reflection
B. interference
C. diffraction
D. refractionSafe and the most reliable method of drying crystals is through_________________?
Safe and the most reliable method of drying crystals is through_________________?A. Filter paper
B. Vacuum desiccators
C. Oven
D. None of theseWhich one of the following acids is present in lemon juice ?
Which one of the following acids is present in lemon juice ?A. Citric acid
B. Benzoic acid
C. Tartaric acid
D. Oxalic acidnergy of atom in compound is___________________?
nergy of atom in compound is___________________?EA. Higher than individual
B. Lesser than individual
C. No change
D. Impossible to predictFormula of Chile saltpetre is__________________?
Formula of Chile saltpetre is__________________?A. NaNO3
B. CaCO3
C. Ba (NO3)2
D. NH4ClEthanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?
Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?A. PdCl2
B. Cu2Cl2
C. CuCl2
D. PbCl2