Electric bulb filament is made of__________?
Electric bulb filament is made of__________?
A. Copper
B. Aluminum
C. Lead
D. Tungsten
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Ethyl chloride with nascent hydrogen produces_________________?
Ethyl chloride with nascent hydrogen produces_________________?A. methane
B. ethane
C. propane
D. butaneWhen cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen__________________?
When cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen__________________?A. lighter
B. intermediate
C. heavier
D. are collected at same timeKetones are comparatively less reactive than aldehdye. It is due to_______________?
Ketones are comparatively less reactive than aldehdye. It is due to_______________?A. alkyl groups are electron donating
B. steric hindrance
C. Both A and B
D. noneFor industrial preparation of CH3CHO catalytic promoter is_________________?
For industrial preparation of CH3CHO catalytic promoter is_________________?A. PdCl2
B. Cu2Cl2
C. CuCl2
D. PbCl2How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum ?
How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum ?A. Two
B. Three
C. Four
D. SixThe common thing in phthalic acid and oxalic acid is that both are_________________?
The common thing in phthalic acid and oxalic acid is that both are_________________?A. Aromatic
B. Dicarboxylic
C. Hydrocarbons
D. Strong acids