Which of the elements show passivity when treated with conc. HNO3?
Which of the elements show passivity when treated with conc. HNO3?
A. Fe
B. A
C. Cr
D. All of the above
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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. refractionDowns cell is used to prepare_________________?
Downs cell is used to prepare_________________?A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium metal
D. Sodium hydroxideSN2 reaction can be best carried out with__________________?
SN2 reaction can be best carried out with__________________?A. primary alkyl halide
B. secondary alkyl halide
C. tertiary alkyl halide
D. allWhich one does not give borax bead test_________________?
Which one does not give borax bead test_________________?A. Copper sulphate
B. Barium sulphate
C. Cobalt sulphate
D. Nickel sulphateFluorine can react with_________________?
Fluorine can react with_________________?A. Xe
B. Kr
C. Rn
D. All of the aboveWhich of the halogen can displace other three elements ?
Which of the halogen can displace other three elements ?A. Flourine
B. Chlorine
C. Iodine
D. Bromine