Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Rectified spirit is :
a. 95% ethyl alcohol
b. 100% ethyl alcohol
c. methylated spirit
d. tincture iodine
Q. Which one of the following does not contain Silver?
a. Ruby Silver
b. Lunar Caustic
c. German Silver
d. Horn Silver
Q. Which of the following auto mobile gases is not considered to be an air pollutant?
a. Carbon dioxide
b. Carbon monoxide
c. Sulfur dioxide
d. Nitrogen dioxide
Q. Which of the following is an essential element used in the synthesis of proteins and other compounds?
a. Phosphorus
b. Iron
c. Magnesium
d. Nitrogen
Q. The orientation of an atomic orbital is governed by –
a. principal quantum number
b. magnetic quantum number
c. spin quantum number
d. azimuthal quantum number
Q. Maximum permissible concentration of total hardness in drinking water is –
a. 50
b. 100
c. 200
d. 500
Q. Electric fuse is an alloy of –
a. tin and lead
b. zinc and lead
c. copper and iron
d. carbon and tin
Q. Which of the following is the major constituent of LPG?
a. Methane
b. Ethane
c. Propane
d. Butane
Q. Taj Mahal is greatly affected due to –
a. Tourists
b. Acid rain
c. Deforestation
d. Sound pollution
Q. The most abundant constituent of atmospheric air is –
a. carbon
b. hydrogen
c. oxygen
d. nitrogen
Q. In the periodic table of elements, on moving from left to right across a period, the atomic radius –
a. decreases
b. increases
c. remains unchanged
d. does not follow a definite pattern