MCQOPTIONS
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MCQOPTIONS
This section includes 1300 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Antimony is |
| A. | Metal |
| B. | Non metal |
| C. | Non metaloid |
| D. | Metalloid |
| Answer» E. | |
| 52. |
In photography, the compound of nitrogen used is |
| A. | Potassium nitrate |
| B. | Silver nitrate |
| C. | Ammonium carbonate |
| D. | Ammonium bicarbonate |
| Answer» C. Ammonium carbonate | |
| 53. |
Rutherford's alpha-scattering experiment related to the size of the |
| A. | Nucleus |
| B. | Atom |
| C. | Electron |
| D. | Neutron |
| Answer» B. Atom | |
| 54. |
Cutting and peeling of onion brings tears to the eyes because of the presence of _____ ? |
| A. | Amino acid |
| B. | Sulfur |
| C. | Carbon |
| D. | Fat |
| Answer» C. Carbon | |
| 55. |
A mixture of sand and naphthalene can be separated by |
| A. | Fractional distillation |
| B. | Sublimation |
| C. | Chromatography |
| D. | Any of them |
| Answer» C. Chromatography | |
| 56. |
Which one is not metal |
| A. | Sulpher |
| B. | Sugar |
| C. | Nitogen |
| D. | All of these |
| Answer» E. | |
| 57. |
What is the structure of IF7 ? |
| A. | Triagonal bipyramid |
| B. | Pentagonal bipyramid |
| C. | Square pyramid |
| D. | Tetrahedral |
| Answer» C. Square pyramid | |
| 58. |
The credit for the discovery of transuranic element goes to |
| A. | Hahn |
| B. | Rutherford |
| C. | Seaborg |
| D. | Curie |
| Answer» D. Curie | |
| 59. |
In known elements, the maximum number is of |
| A. | Metals |
| B. | Non metals |
| C. | Metalloids |
| D. | None of these |
| Answer» B. Non metals | |
| 60. |
When formaldehyde and potassium hydroxide are heated, we get |
| A. | Acetylene |
| B. | Methyl alcohol |
| C. | Methane |
| D. | Ethyl formate |
| Answer» C. Methane | |
| 61. |
Boron cannot form which one of the following anions? |
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
| Answer» C. Option 3 | |
| 62. |
Which one of the following is not radioactive |
| A. | Astanine |
| B. | Francium |
| C. | Tritium |
| D. | Zirconium |
| Answer» E. | |
| 63. |
The hard Shell of an egg was dissolved in HCL. The egg was then placed in a concentration solution of NaCl. What will happens ______ |
| A. | The egg will shrink |
| B. | The egg will swell |
| C. | The egg will become harder |
| D. | There will be hardly any visible change |
| Answer» B. The egg will swell | |
| 64. |
Temporary hardness is due to the presence of |
| A. | Calcium carbonate |
| B. | Calcium bicarbonate |
| C. | Magnesium sulphate |
| D. | Calcium sulphate |
| Answer» C. Magnesium sulphate | |
| 65. |
Cathode rays are |
| A. | Electromagnetic wave |
| B. | Stream of alpha particle |
| C. | Stream of electrons |
| D. | Radiations |
| Answer» D. Radiations | |
| 66. |
How many moles are there in 140g of Si (atomic mass of silicon is 28) |
| A. | 5 |
| B. | 10 |
| C. | 28 |
| D. | 140 |
| Answer» B. 10 | |
| 67. |
The father of modern chemistry is |
| A. | Priestley |
| B. | Lavoisier |
| C. | Dalton |
| D. | Mendeleeff |
| Answer» C. Dalton | |
| 68. |
The activity of rradioisotope change with |
| A. | Temperature |
| B. | Pressure |
| C. | Chemical environment |
| D. | None of these |
| Answer» E. | |
| 69. |
A device used for the measurement of radioactivity is |
| A. | Mass spectrometer |
| B. | Cyclotron |
| C. | Nuclear reactor |
| D. | G.m.counter |
| Answer» E. | |
| 70. |
Thenitrogen atom has 7 protons and 7 electrons,The nitride ion will have |
| A. | 10 protons and 7 electrons |
| B. | 7 protons and 10 electrons |
| C. | 4 protons and 7 electrons |
| D. | 4 protons and 10 electrons |
| Answer» C. 4 protons and 7 electrons | |
| 71. |
Which one of the following is a natural colloid ? |
| A. | Cane sugar solution |
| B. | Blood |
| C. | Sodium chloride solution |
| D. | Urea solution |
| Answer» C. Sodium chloride solution | |
| 72. |
Which of the following is a regenerated fibre? |
| A. | Terylene |
| B. | Rayon |
| C. | Nylon |
| D. | Silk |
| Answer» C. Nylon | |
| 73. |
'Minamata' disease was caused by ? |
| A. | Lead |
| B. | Mercury |
| C. | Cadmium |
| D. | Zinc |
| Answer» C. Cadmium | |
| 74. |
Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at ?6 C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol) |
| A. | 204.60 g |
| B. | 304.30 g |
| C. | 804.32 g |
| D. | 400.00 g |
| Answer» D. 400.00 g | |
| 75. |
The main element used in the vulcanisation of rubber is |
| A. | Nickel |
| B. | Copper |
| C. | Sulphur |
| D. | Graphite |
| Answer» D. Graphite | |
| 76. |
Number of moles of solute present in 1 litre of solution is |
| A. | Normality |
| B. | Molarity |
| C. | Molality |
| D. | Formality |
| Answer» C. Molality | |
| 77. |
A bond formed by sharing of electrons between atoms of the element is called |
| A. | Ionic bond |
| B. | Covalent bond |
| C. | Co ordinate bond |
| D. | None |
| Answer» C. Co ordinate bond | |
| 78. |
An alloy is |
| A. | A compound |
| B. | An allotropic form |
| C. | An isomer |
| D. | A mixture |
| Answer» E. | |
| 79. |
Atomic weight of an element is given by |
| A. | Sum of neutrons and electrons |
| B. | Sum of neutrons and protons |
| C. | Only neutrons |
| D. | Only protons |
| Answer» B. Sum of neutrons and protons | |
| 80. |
Which one of the following elements is the poorest conductor of heat |
| A. | Sodium |
| B. | Lead |
| C. | Zinc |
| D. | Mercury |
| Answer» C. Zinc | |
| 81. |
The fundamental particles present in equal numbers in neutral atoms are |
| A. | Protons and electrons |
| B. | Neutrons and electrons |
| C. | Protons and neutrons |
| D. | Protons and positrons |
| Answer» B. Neutrons and electrons | |
| 82. |
In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is |
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
| Answer» B. Option 2 | |
| 83. |
A particle which is similar to electron is |
| A. | Positron |
| B. | Beta particle |
| C. | Photon |
| D. | Mason |
| Answer» C. Photon | |
| 84. |
' Misch metal ' is widely used in manufacture of which of the following |
| A. | Material of car brake |
| B. | Smoke detectors |
| C. | Cigarette lighters |
| D. | Emergency lights |
| Answer» D. Emergency lights | |
| 85. |
A radioactive substance has a half life of four months, three-fourth of the substance would decay in |
| A. | 3 months |
| B. | 4 months |
| C. | 8 months |
| D. | 12 months |
| Answer» D. 12 months | |
| 86. |
How many electrons are there in Na+ |
| A. | 1 |
| B. | 10 |
| C. | 11 |
| D. | 12 |
| Answer» C. 11 | |
| 87. |
In nuclear reactor,Chain reaction is controlled by introducing |
| A. | Cadmium rod |
| B. | Iron rod |
| C. | Platinum rod |
| D. | Graphite rod |
| Answer» B. Iron rod | |
| 88. |
' Yellow cake ' an item of smuggling across border s |
| A. | A crude form of heroin |
| B. | A crude form of cocaine |
| C. | Uranium oxide |
| D. | Unrefined gold |
| Answer» D. Unrefined gold | |
| 89. |
Which one is the pure element |
| A. | Glass |
| B. | Cement |
| C. | Sodium |
| D. | None of these |
| Answer» D. None of these | |
| 90. |
Which one of the following is not a mixture |
| A. | Air |
| B. | Mercury |
| C. | Milk |
| D. | Cement |
| Answer» C. Milk | |
| 91. |
Electromagnetic radiation with maximum wavelength is |
| A. | Ultraviolet |
| B. | Radio waves |
| C. | X-rays |
| D. | Infrared |
| Answer» C. X-rays | |
| 92. |
A ?breath test? used by traffic police to check drunken driving uses ____? |
| A. | Turmeric on filter paper |
| B. | Silica gel coated with silver nitrate |
| C. | Potassium permanganate-sulphuric acid |
| D. | Potassium dichromatic-sulphuric acid |
| Answer» E. | |
| 93. |
In nuclear reactor the speed of neutrons is slowed down by |
| A. | Heavy water |
| B. | Ordinary water |
| C. | Zinc rods |
| D. | Molten caustic soda |
| Answer» B. Ordinary water | |
| 94. |
Permanent hardness of water is due to the presence of ? |
| A. | Calcium sulphate |
| B. | Calcium bicarbonate |
| C. | Sodium bicarbonate |
| D. | Magnesium bicarbonate |
| Answer» B. Calcium bicarbonate | |
| 95. |
Gold and silver are extracted from their respective ores by _______ |
| A. | Smelting |
| B. | Roasting |
| C. | Leaching |
| D. | Hydro metallurgy |
| Answer» E. | |
| 96. |
Artificial radioactivity elements are present in |
| A. | S - block |
| B. | P - block |
| C. | D - block |
| D. | F - block |
| Answer» E. | |
| 97. |
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of : |
| A. | An acetylenic triple bond |
| B. | Two ethylenic double bonds |
| C. | A vinyl group |
| D. | An isopropyl group |
| Answer» D. An isopropyl group | |
| 98. |
Van der Waal's equation explains the behaviour of _____ |
| A. | Ideal gases |
| B. | Real gases |
| C. | Mixture of gases |
| D. | Diatomic gases |
| Answer» C. Mixture of gases | |
| 99. |
"If a system A is in thermal equilibrium with B and B is in thermal equilibrium with C, then A and C are in equilibrium with each other". This is a statement of |
| A. | Cyclic rute |
| B. | Zeroth law of thermodynamics |
| C. | First law of thermodynamics |
| D. | Second law of thermodynamics |
| Answer» C. First law of thermodynamics | |
| 100. |
Group displacement law was given by |
| A. | Bacquerel |
| B. | Rutherford |
| C. | Mendeleaf |
| D. | Soddy and fajan |
| Answer» E. | |