Top 1000+ Solved Chemistry MCQ Questions Answer
Q. There are some substances whose odor changes in acidic or basic media. These are called -
a. Olfactory indicators
b. Litmus indicator
c. Gustatory indicators
d. All of the above
Q. Which of the following elements has the atomic number greater than that of Phosphorus?
a. Aluminium
b. Silicon
c. Chlorine
d. Magnesium
Q. If the sewage is fully oxidized, the nitrogen is in the form of –
a. Nitrites
b. Ammonia
c. Nitramines
d. Nitrates
Q. Which among the following is used to dilute oxygen in the gas cylinders used by divers?
a. Krypton
b. Argon
c. Helium
d. Neon
Q. Which hydrocarbons are the major constituents of 'LPG'?
a. Methane and Ethane
b. Propane and Butane
c. Pentane and Benzene
d. Only Methane
Q. which is stable com- pound. This causes oxygen starvation in the body tissues and eventually causes death by suffocation.ammonium phosphate.
a. N4H6PO4
b. (NH4)3PO
c. (NH4)3PO4
d. (NH4)2PO4
Q. If there is one million Mg2+ ions in MgCl2, how many chloride ions are there?
a. Two million
b. One million
c. Half a million
d. Ten million