Top 1000+ Solved Chemistry MCQ Questions Answer
Q. What is the common name of analgesic and antipyretic drug acetylsalicylic acid?
a. Paracetamol
b. Aspirin
c. Wintergreen
d. Trazodone
Q. The gas which turns into liquid at the lowest temperature among the following is –
a. hydrogen
b. oxygen
c. helium
d. nitrogen
Q. Gunpowder consits of a mixture of –
a. sand and TNT
b. TNT and charcoal
c. nitre, sulphur and charcoal
d. sulphur, sand and charcoal
Q. Vinegar made by fermentation from cane sugar contains –
a. palmitic acid
b. lactic acid
c. citric acid
d. acetic acid
Q. Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission?
a. Boron
b. Heavy water
c. Uranium
d. Plutonium
Q. Bone ash contains -
a. Calcium sulphate
b. Phosphoric sulphate
c. Calcium phosphate
d. Calcium hypophosphate
Q. potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?
a. From brown to blue-black
b. From brown to orange-red
c. From blue to pink
d. From pink to blue-green
Q. What is the most common salt in sea water?
a. Calcium carbonate
b. Potassium chloride
c. Sodium chloride
d. Magnesium sulphate
Q. When quick lime is added to water
a. heat is liberated
b. heat is absorbed
c. temperature decreases
d. no heat change takes place
Q. The umber of neutrons present in an element having mass number 226 and atomic number 88 is–
a. 88
b. 138
c. 314
d. 50
Q. The atomic number of hydrogen is 1. This implies that it contains in its K- shell.
a. One neutron
b. One proton
c. One electron
d. None of the above