CHEMISTRY MCQ
1. Which of the following is the most used chemical for ripening of mangoes in India?
a. Potassium iodide
b. Silver iodide
c. Ammonium nitrate
d. Ethylene
2. The element common to all acid is?
a. Oxygen
b. Hydrogen
c. Nitrogen
d. Sulphur
3. Which of the following is mixture of carbon monoxide and hydrogen?
a. Coal gas
b. Producer gas
c. Water gas
d. Gober gas
4. Which of the following discover electron?
a. JJ Thomson
b. Rutherford
c. RA Millikan
d. James Chadwick
5. Liquified petroleum gas is mostly a mixture of which of the following two carbon compound?
a. Methane and ethane
b. Ethane and propane
c. Propane and butane
d. Methane and propane
6. Which of this nonmetal is commonly used as a general anaesthetic?
a. Helium
b. Tellurium
c. Xenon
d. Fluorine
7. Which of the following is an ore of aluminium?
a. Galena
b. Cryolite
c. Epsom salt
d. Cinnabar
8. Acid reacts with bases to give?
a. Ester
b. Alcohol
c. Salt
d. None
9. Element that shows the properties of both metal and nonmetal?
a. Allotropes
b. Metalloids
c. Alloys
d. Metals
10. Commercially sodium bicarbonate is known as
a. Washing soda
b. Baking soda
c. Bleaching powder
d. Indian saltpetre
11. What is the common name of calcium sulphate hemihydrate?
a. Bleaching powder
b. Slacked lime
c. Plaster of Paris
d. Detergent
12. If water smell bad then that odour can be removed by adding?
a. Alum
b. Bleach
c. Activated carbon
d. Deactivated nitrogen
13. Hydrochloric acid is also known as?
a. Gallic acid
b. Picric acid
c. Muriatic acid
d. Chloric acid
14. Name of the gas used in preparation of bleaching powder?
a. Oxygen
b. Hydrogen
c. Nitrogen
d. Chlorine
15. Beside CO2 the other green house gas is ?
a. CH4
b. N2
c. Ar
d. O2
16. Lime stone is a row material raw material used by which industry?
a. Aluminium
b. Fertilizer
c. Cement
d. Petrochemicals
17. Atomic number of an atoms gives the number of which of the following?
a. Electron
b. Proton
c. Neutron
d. Positron
18. The fourth most abundant metal in the eart crust is ?
a. Sodium
b. Calcium
c. Aluminium
d. Iron
19. Which is known as carbolic acid?
a. Phenol
b. Ethanol
c. Acetic acid
d. Oxalic acid
20. Which method will be employed to test the hardness of water?
a. Boiling
b. Distillation
c. Formation of lather with soap
d. None of these
21. Which of the inert gas can form compound?
a. Helium
b. Xenon
c. Krypton
d. Argon
22. Which of the following elements is used in the manufacture of fertilizers?
a. Fluorine
b. Nitrogen
c. Lead
d. Aluminium
23. Phosphoric acid is
a. Monobasic
b. Dibasic
c. Tribasic
d. Tetra basic
24. Which of the following is liquid nonmetal?
a. Mercury
b. Water
c. Bromine
d. Alcohol
25. The chemical formula of laughing gas is
a. NO
b. N2O
c. NO2
d. N2O3
26. Oxidation in chemical reaction is the……...?
a. Gain of nitrogen
b. Loss of oxygen
c. Gain of hydrogen
d. Gain of oxygen
27. The process of coating of a layer of zinc on metal iron tp protect it from roasating is called?
a. Sublimation
b. Hydrogenation
c. Galvanisation
d. Vulcanisation
28. Bell metal is an Alloy of which of the following meta?
a. Copper and tin
b. Copper and zinc
c. Carbon and iron
d. Copper and lead
29. What is the name slacked lime?
a. Calcium carbonate
b. Sodium carbonate
c. Calcium oxide
d. Calcium hydroxide
30. The process that separates a pure solid in the form of its crystals from a solution-
a. Distillation
b. Sublimation
c. Chromatography
d. Crystallisation
