Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Which among the following is the main constituent of malleable metal alloy Pewter ?
a. Copper
b. Zinc
c. Tin
d. Bismuth
Q. Which among the following does not come under carbon Group of Periodic Table?
a. silicon
b. germanium
c. tin
d. selenium
Q. Which among the following is not correctly matched?
a. Sodium: Natrium
b. Pottassium : Kalium
c. Mercury :Hydrargyrum
d. Arsenic : Stibium
Q. The chemical oxygen demand COD test is commonly used to measure which of thefollowing?
a. amount of organic compounds in water
b. amount of oxygen in water
c. amount of oxygen in a chemical
d. amount of oxygen used in a oxygenation process
Q. Liming is the application of calcium and magnesium rich materials to soil in various forms, including marl, chalk, limestone, or hydrated lime. What is the purpose of liming?
a. Increase the Soil pH
b. Increase the bacteria activity
c. Both A & B
d. Decrease the bacterial activity
Q. Who among the following established that genetic code of all organisms is spelled out inthree-letter words, each set of three nucleotides codes for a specific amino acid?
a. Hargobind Khorana
b. Barbara McClintock
c. Theodor O. Diener
d. Joseph L. Goldstein
Q. Which among the following is a main component of some alert tablets such as Alert, No Doz, Stay Awake & Vivarin?
a. Thein
b. Caffeine
c. Nicotine
d. catechins
Q. Which among the following compound of barium is used as radio contrast agent for X-ray imaging and other diagnostic procedures and also commonly called as Barium Food?
a. Barium Carbonate
b. Barium Sulphate
c. Barium Bromide
d. Barium hydroxide
Q. Which among the following is used as an antidote?
a. Paracetamol
b. Nicotine
c. Thiamine
d. Activated Charcoal
Q. What is the common name of CaOCI2?
a. Baking Powder
b. Baking Soda
c. Bleaching Powder
d. Washing Soda
Q. Rutherford’s scattering experiment proved the presence of -
a. atoms in all matter
b. electrons in atoms
c. neutrons in atoms
d. nucleusin atoms