Chemistry MCQS with Answers for NTS
Ascorbic acid is a chemical name of
Vitamin A
Vitamin B6
Vitamin C
Vitamin D
Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about
Six inches
Three inches
Two inches
Five inches
Vital force theory was rejected by
Lavoiser
Wholer
Kolbe
Berzelius
Among alkali metal salts,the lithium salts are the poorest conductors of electricity in aqueous solution because of
Lowest charge to radius ratio
Easy diffusion of Li+ ions
Lower ability of Li+ ions to polarize water molecules
Higher degree of hydration of Li+ ions.
In which of the following elements +1 oxidation state is more stable than +3
Ga
B
Ti
AI
Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?
PCI5
SOCI2
NaCI
HCI + anhyd. ZnCI2
A chemical reaction A B is said to be in equilibrium when
Conversion of A to B is only 50% complete
Only 10% conversion of A to B has taken place
The rate of transformation of A to B is just equal to rate of transformation of B to A in the system
Complete conversion of A to B has taken place
Potassium is kept in
Kerosene
Ammonia
alcohol
Water
The equilibrium Cr2O2-7 2CrO24 is shifted to right in
A neutral medium
A basic medium
An acidic medium
It does not exist
The reaction/method that does not give an alkane is
Dehydrohalogenation of an alkyl halid.
Catalytic hydrogenation of alkanes
Wurtz reaction
Hydrolysis of alkyl magnesium bromide
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