MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 180 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The main source of Naphthaleneis |
| A. | Charcoal |
| B. | Camphor |
| C. | Coal-tar |
| D. | Diesel |
| Answer» D. Diesel | |
| 102. |
In a nuclear reactor the material use for absorbing neutrons is |
| A. | zinc |
| B. | radium |
| C. | lead |
| D. | cadmium |
| Answer» E. | |
| 103. |
The resources which can be used continuously, year-after -year are called |
| A. | Biotic |
| B. | Abiotic |
| C. | Non-renewable |
| D. | Renewable |
| Answer» E. | |
| 104. |
Bhopal gas tragedy 1984 is related to |
| A. | Aluminium Phosphide |
| B. | Methyl bromide |
| C. | Methyl isocyanate |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 105. |
Which of the following is a super-cooled liquid? |
| A. | Ice-cream |
| B. | Ammonia |
| C. | Glass |
| D. | Wood |
| Answer» D. Wood | |
| 106. |
The energy of the sun is mainly due to |
| A. | nuclear fission |
| B. | radioactivity |
| C. | heat |
| D. | nuclear fusion |
| Answer» E. | |
| 107. |
Which of the following has the highest penetrating power? |
| A. | -ray |
| B. | -ray |
| C. | -ray |
| D. | -ray |
| Answer» D. -ray | |
| 108. |
For a spontaneous process |
| A. | G is +ve |
| B. | G is ve |
| C. | G is equal to zero |
| D. | H is ve |
| Answer» C. G is equal to zero | |
| 109. |
The percentage of carbon in cost iron is : |
| A. | 0.01 to 0.25 |
| B. | 0.5 to 1.5 |
| C. | 6 to 8 |
| D. | 3 to 5 |
| Answer» E. | |
| 110. |
Vinegar is a commercial name of |
| A. | Oxalic acid |
| B. | Hydrochloric acid |
| C. | Acetic acid |
| D. | Citric acid |
| Answer» D. Citric acid | |
| 111. |
The fuel that is used in modern submarines is |
| A. | Nuclear fuel |
| B. | Petrol |
| C. | Coal |
| D. | Diesel |
| Answer» B. Petrol | |
| 112. |
Name the particle that is most essential to continue the chain reaction during the fission of uranium |
| A. | Electron |
| B. | Proton |
| C. | Neutron |
| D. | Positron |
| Answer» D. Positron | |
| 113. |
Heavy water is so called because it contains |
| A. | Heavy isotope of hydrogen |
| B. | Heavy isotope of oxygen |
| C. | Mole number of hydrogen atoms |
| D. | Mole number of oxygen atoms |
| Answer» B. Heavy isotope of oxygen | |
| 114. |
When Arsenic atoms are added to Germanium lattice, it becomes a/an |
| A. | Insulator |
| B. | Superconductor |
| C. | Intrinsic semiconductor |
| D. | Extrinsic semiconductor |
| Answer» E. | |
| 115. |
Which of the following metals can deposit copper from copper sulphate solution ? |
| A. | Platinum |
| B. | Mercury |
| C. | Iron |
| D. | Gold |
| Answer» D. Gold | |
| 116. |
Neutrons are slowed down in a nuclear reactor by |
| A. | Fissionable material |
| B. | Moderator |
| C. | Control rods |
| D. | Cooling system |
| Answer» C. Control rods | |
| 117. |
Which one of the following does notform oxyacid ? |
| A. | Sulphur |
| B. | Chlorine |
| C. | Nitrogen |
| D. | Fluorine |
| Answer» E. | |
| 118. |
Spontaneous change is one in there is: |
| A. | A lowering of entropy |
| B. | A lowering of free energy |
| C. | Increase in free energy |
| D. | An increase in Internal energy |
| Answer» C. Increase in free energy | |
| 119. |
Humburger effect is otherwise known as |
| A. | Sodium pump |
| B. | Anaerobic metabolism |
| C. | Choloride shift |
| D. | Respiratory product |
| Answer» D. Respiratory product | |
| 120. |
The chemical name of laughing gas is |
| A. | Nitric oxide |
| B. | Nitrogen dioxide |
| C. | Nitrogen pentoxide |
| D. | Nitrous oxide |
| Answer» E. | |
| 121. |
Chemically Quick Silver is known as |
| A. | Mercury |
| B. | Silver |
| C. | Gold |
| D. | Copper |
| Answer» B. Silver | |
| 122. |
Which of the following gases is mixed with oxygen for breathing by divers in aqualungs? |
| A. | Methane |
| B. | Nitrogen |
| C. | Helium |
| D. | Hydrogen |
| Answer» C. Helium | |
| 123. |
The metal, used to galvanise iron to protect it from rusting is |
| A. | Zinc |
| B. | Chromium |
| C. | Lead |
| D. | Antimony |
| Answer» B. Chromium | |
| 124. |
The presence of Cobalt in Vitamin B |
| A. | Hydrolysis test |
| B. | Spectroscopy |
| C. | Borax-Bead test |
| D. | Sodium Nitroprusside test |
| Answer» C. Borax-Bead test | |
| 125. |
The effect or response produced by two or more chemicals are less than the sum of the effects or response that the chemical would produce individually is known as |
| A. | Antagonism |
| B. | Independent |
| C. | Additive |
| D. | Synergism |
| Answer» B. Independent | |
| 126. |
The chemical(s) most commonly used for cloud seeding or artificial rainmaking is/are |
| A. | Silver Iodide |
| B. | Sodium Chloride |
| C. | Dry ice or frozen carbon dioxide |
| D. | All the above |
| Answer» B. Sodium Chloride | |
| 127. |
Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are |
| A. | Boron and Cadmium |
| B. | Boron and Plutonium |
| C. | Cadmium and Uranium |
| D. | Uranium and Boron |
| Answer» B. Boron and Plutonium | |
| 128. |
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 |
| Answer» B. Heavy water | |
| 129. |
Cokking gas is a mixture of |
| A. | methane and ethylene |
| B. | carbon dioxide and oxygen |
| C. | butane and propane |
| D. | carbon monoxide and carbon dioxide |
| Answer» D. carbon monoxide and carbon dioxide | |
| 130. |
Which of the following is responsible for the extra strength of pyrex glass ? |
| A. | Potassium Carbonate |
| B. | Lead Oxide |
| C. | Borax |
| D. | Ferric Oxide |
| Answer» D. Ferric Oxide | |
| 131. |
Raw materials used for the manufacture of glass are |
| A. | sand, soda, limestone |
| B. | sand, charcoal, soda |
| C. | limestone, charcoal, sulphur |
| D. | sand, sulphur, soda |
| Answer» B. sand, charcoal, soda | |
| 132. |
An example of semiconductor is |
| A. | German silver |
| B. | Germanium |
| C. | Phosphorous |
| D. | Arsenic |
| Answer» C. Phosphorous | |
| 133. |
The fiber least prone to catch fire is |
| A. | nylon |
| B. | polyester |
| C. | cotton |
| D. | terylene |
| Answer» D. terylene | |
| 134. |
Acid secretion is characteristic of |
| A. | Buccal cavity |
| B. | Stomach |
| C. | Small intestine |
| D. | Large intestine |
| Answer» C. Small intestine | |
| 135. |
Helium gas is filled in ballons because |
| A. | its atomic number is 2 |
| B. | it is lighter than air |
| C. | it is one of the constitutents of water |
| D. | it is a noble gas |
| Answer» C. it is one of the constitutents of water | |
| 136. |
The drug Marijuana is a |
| A. | sedative |
| B. | mental stimulant |
| C. | hallucinating substance |
| D. | tranquillizer |
| Answer» B. mental stimulant | |
| 137. |
An example of replenshible energy source is |
| A. | Coal |
| B. | Petroleum |
| C. | Lignite |
| D. | Biomass |
| Answer» E. | |
| 138. |
The Refrigerant FREON' is |
| A. | Calcium Tetra Fluoride |
| B. | Difluoro Dichloro Methane |
| C. | Fluorspar and Felspar |
| D. | Hydrofluosilicic Acid |
| Answer» C. Fluorspar and Felspar | |
| 139. |
The isotope used for the production of atomic energy is |
| A. | U-235 |
| B. | U-238 |
| C. | U-234 |
| D. | U-236 |
| Answer» B. U-238 | |
| 140. |
Percentage of lead in lead pencilsis |
| A. | 0 |
| B. | 31-66 |
| C. | 40 |
| D. | 80 |
| Answer» B. 31-66 | |
| 141. |
Which of the following is not present in German-silver? |
| A. | Copper |
| B. | Nickel |
| C. | Silver |
| D. | Zinc |
| Answer» D. Zinc | |
| 142. |
The chemical name of Common salt is |
| A. | Sodium chloride |
| B. | Sodium nitrate |
| C. | Ammonium chloride |
| D. | Calcium chloride |
| Answer» B. Sodium nitrate | |
| 143. |
Which one of the following isnot a radio-active element ? |
| A. | Uranium |
| B. | Thorium |
| C. | Radium |
| D. | Cadmium |
| Answer» E. | |
| 144. |
Nuclear energy is a mineral based energy source. It is derived from |
| A. | uranium |
| B. | thorium |
| C. | plutonium |
| D. | All of the above |
| Answer» B. thorium | |
| 145. |
Photooxidation process is initiated by |
| A. | light |
| B. | heat |
| C. | oxygen |
| D. | catalyst |
| Answer» B. heat | |
| 146. |
The fuel used in an atomic reactor is |
| A. | Coal |
| B. | Petrol |
| C. | Combustable gases |
| D. | Uranium |
| Answer» E. | |
| 147. |
Gunpowder consits of a mixture of |
| A. | sand and TNT |
| B. | TNT and charcoal |
| C. | nitre, sulphur and charcoal |
| D. | sulphur, sand and charcoal |
| Answer» D. sulphur, sand and charcoal | |
| 148. |
Who developed atom bomb ? |
| A. | Warner Wan Brown |
| B. | J. Robert Openheimer |
| C. | Edward Taylor |
| D. | Samuel Koehen |
| Answer» C. Edward Taylor | |
| 149. |
The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? |
| A. | 6 |
| B. | 12 |
| C. | 18 |
| D. | Zero |
| Answer» B. 12 | |
| 150. |
What is milk of magnesia chemically ? |
| A. | Magnesium carbonate |
| B. | Sodium bicarbonate |
| C. | Calcium hydroxide |
| D. | Magnesium hydroxide |
| Answer» E. | |