MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Lime water becomes white due to which gas?_x005F_x000D_ |
| A. | CO2 |
| B. | O2 |
| C. | NO2_x005F_x000D_ |
| D. | N2 |
| Answer» B. O2 | |
| 2. |
Laterite is chemically classified as |
| A. | argillaceous rock |
| B. | metamorphic rock |
| C. | caleareous rock |
| D. | sillcious rock |
| Answer» B. metamorphic rock | |
| 3. |
Ketchup stored in a tin can may lead to chemical contamination. |
| A. | 1 |
| B. | |
| C. | |
| D. | |
| Answer» B. | |
| 4. |
Leakage in LP gas cylinders is easily detected by adding |
| A. | mercaptans |
| B. | propylene |
| C. | carbon disulphide |
| D. | phosgene |
| Answer» B. propylene | |
| 5. |
Kidney stones are composed of ______. |
| A. | Calcium Oxalate |
| B. | Sodium Chloride |
| C. | Magnesium Nitrate |
| D. | Calcium Bicarbonate |
| Answer» B. Sodium Chloride | |
| 6. |
IUPAC full form |
| A. | Indian Union of Pure and Applied Chemistry |
| B. | International Union of Postal and Application Corporation |
| C. | International Union of Pure and Applied Chemistry |
| D. | International University of Poland And Combodia |
| Answer» D. International University of Poland And Combodia | |
| 7. |
Isotopes of the atoms of same element have |
| A. | same number of neutrons |
| B. | same number of protons |
| C. | same atomic mass |
| D. | different chemical properties |
| Answer» C. same atomic mass | |
| 8. |
Isotopes of an element have ______._x005F_x000D_ |
| A. | Same physical properties |
| B. | Different chemical properties |
| C. | Different number of neutrons |
| D. | Different atomic number |
| Answer» D. Different atomic number | |
| 9. |
Isotopes have ______._x005F_x000D_ Â _x005F_x000D_ I. similar physical quantities and different chemical properties_x005F_x000D_ II. different physical properties_x005F_x000D_ III. similar chemical properties_x005F_x000D_ |
| A. | Only I and II |
| B. | Only I and III |
| C. | Only II and III |
| D. | All I, II and III |
| Answer» D. All I, II and III | |
| 10. |
Isotones have always ______ |
| A. | Same number of protons |
| B. | Same atomic number |
| C. | Same number of neutron |
| D. | Same number of proton and same numbe of neutron |
| Answer» D. Same number of proton and same numbe of neutron | |
| 11. |
Isotopes are atoms of the same element that have different |
| A. | mass numbers |
| B. | atomic numbers |
| C. | protons |
| D. | All of the above |
| Answer» B. atomic numbers | |
| 12. |
Isobars are atoms of different chemical elements that have ______._x005F_x000D_ |
| A. | Same atomic number but different mass number |
| B. | Same mass number but different atomic number |
| C. | Same mass number and same atomic number |
| D. | Different mass number and different atomic number_x005F_x000D_ |
| Answer» C. Same mass number and same atomic number | |
| 13. |
Isobars have _______. |
| A. | Same mass numbers but different atomic numbers |
| B. | Different mass numbers but same atomic numbers |
| C. | Same mass and atomic numbers |
| D. | Different mass and atomic numbers |
| Answer» B. Different mass numbers but same atomic numbers | |
| 14. |
Is water a Pure substance? |
| A. | 1 |
| B. | |
| C. | |
| D. | |
| Answer» B. | |
| 15. |
Is steel a compound? |
| A. | 1 |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 16. |
Is SiCl4 polar or nonpolar? |
| A. | Polar |
| B. | non polar |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 17. |
Is Nitrogen an Inert gas? |
| A. | 1 |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 18. |
Is deposition endothermic or exothermic? |
| A. | Endothermic |
| B. | Exothermic |
| C. | Both A & B |
| D. | Can't be determined |
| Answer» C. Both A & B | |
| 19. |
Is Baking soda chemically different from Baking powder? |
| A. | Yes, Baking soda is sodium carbonate while Baking powder is Sodium Bicarbonate |
| B. | Yes, Baking soda is sodium bicarbonate while Baking powder is a mixture of sodium bicarbonate and tartaric acid |
| C. | Yes, Baking soda is sodium bicarbonate while Baking powder is Calcium Carbonate |
| D. | No, they are identical chemically |
| Answer» C. Yes, Baking soda is sodium bicarbonate while Baking powder is Calcium Carbonate | |
| 20. |
Iron rusting, chemical or physical change |
| A. | Chemical |
| B. | Physical |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. Physical | |
| 21. |
Iron and manganese present as pollutants in water cannot be removed by_____ |
| A. | oxidation followed by settling and filtration |
| B. | chlorination |
| C. | ion exchange process |
| D. | lime soda process or manganese zeolite process |
| Answer» C. ion exchange process | |
| 22. |
Ionic compounds ______._x005F_x000D_ Â _x005F_x000D_ I. have high boiling point_x005F_x000D_ II. have high melting point_x005F_x000D_ III. conduct electricity in solution_x005F_x000D_ |
| A. | Only I and II |
| B. | Only I and III |
| C. | Only II and III |
| D. | All I, II and III |
| Answer» E. | |
| 23. |
Iodex, a pain relief balm, has the smell of __________ . |
| A. | Methyl salicylate |
| B. | Ethyl salicylate |
| C. | Propyl salicylate |
| D. | Butyl salicylate |
| Answer» B. Ethyl salicylate | |
| 24. |
Infiltration is the process by which rainwater becomes |
| A. | river water |
| B. | ground water |
| C. | salt water |
| D. | ocean water |
| Answer» C. salt water | |
| 25. |
Intermolecular forces in HCl are |
| A. | Hydrogen bonding |
| B. | Dipole-dipole |
| C. | Dispersion force |
| D. | All the above |
| Answer» E. | |
| 26. |
In which of the following solution the concentration of H+ ion is the maximum? |
| A. | pH 6 |
| B. | pH 8 |
| C. | pH 5 |
| D. | pH 9 |
| Answer» D. pH 9 | |
| 27. |
Inert gases are |
| A. | Miscible with water |
| B. | Not stable |
| C. | Chemically unreactive |
| D. | Chemically very active |
| Answer» D. Chemically very active | |
| 28. |
In which of the following is citric acid present?_x005F_x000D_ |
| A. | Tamarind |
| B. | Lemon |
| C. | Black Gram |
| D. | Curd |
| Answer» C. Black Gram | |
| 29. |
In which of the following groups of the modern periodic table are the noble gases placed? |
| A. | 16 |
| B. | 18 |
| C. | 17 |
| D. | 15 |
| Answer» C. 17 | |
| 30. |
In which of the following activities silicon carbide is used |
| A. | Disinfecting water of ponds |
| B. | Making casts for statues |
| C. | Making cement and glass |
| D. | Cutting very hard substances |
| Answer» E. | |
| 31. |
In which of the following, functional group isomerism is not possible?_x005F_x000D_ |
| A. | Alcohols |
| B. | Aldehydes |
| C. | Alkyl halides |
| D. | Cyanides |
| Answer» D. Cyanides | |
| 32. |
In water treatment plant, use of chloramines ensures __________ |
| A. | taste and odour control |
| B. | weed control in reservoirs |
| C. | disinfection |
| D. | removal of permanent hardness |
| Answer» D. removal of permanent hardness | |
| 33. |
In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as |
| A. | an acid |
| B. | an oxidising agent |
| C. | a reducing agent |
| D. | a base |
| Answer» D. a base | |
| 34. |
In the thermite process, the reducing agent is |
| A. | Chlorine |
| B. | Aluminium |
| C. | Silicon |
| D. | Iron |
| Answer» C. Silicon | |
| 35. |
In the process of ___, the iron is protected by a coating of zinc. |
| A. | greasing |
| B. | alloying |
| C. | galvanisation |
| D. | anodising |
| Answer» D. anodising | |
| 36. |
In the process of Galvanisation, which metal is coated over iron?_x005F_x000D_ |
| A. | Lead |
| B. | Nickel |
| C. | Chromium |
| D. | Zinc |
| Answer» E. | |
| 37. |
In the modern periodic table, which of the two periods contain 8 elements each? |
| A. | 4 and 5 |
| B. | 3 and 4 |
| C. | 1 and 2 |
| D. | 2 and 3 |
| Answer» E. | |
| 38. |
In the modern periodic table. periods ............ and ........ contain Lanthanoides and Actinoides._x005F_x000D_ |
| A. | 3 and 4 |
| B. | 6 and 7 |
| C. | 4 and 5 |
| D. | 5 and 6 |
| Answer» C. 4 and 5 | |
| 39. |
In the Modern Periodic Table elements present in the same period will have the same |
| A. | atomic weight |
| B. | number of shells |
| C. | atomic number |
| D. | valence electrons |
| Answer» C. atomic number | |
| 40. |
In the Modern Periodic Table, elements are arranged in |
| A. | increasing atomic mass number |
| B. | increasing atomic number |
| C. | decreasing atomic mass number |
| D. | decreasing atomic number |
| Answer» C. decreasing atomic mass number | |
| 41. |
In the Modern Periodic Table, a zig-zag line separates |
| A. | metals from halogens |
| B. | non-metals from metalloids |
| C. | metals from non-metals |
| D. | metals from metalloids |
| Answer» D. metals from metalloids | |
| 42. |
In the making of jewels, gold is usually mixed with |
| A. | zinc |
| B. | tin |
| C. | copper |
| D. | aluminium |
| Answer» D. aluminium | |
| 43. |
In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement"._x005F_x000D_ As feared, (differences into) the families pose a hurdle. |
| A. | difference into |
| B. | difference as in |
| C. | difference amongst |
| D. | No improvement |
| Answer» D. No improvement | |
| 44. |
In the following gases, which is not a colorless or odourless gas? |
| A. | Nitrogen |
| B. | Chlorine |
| C. | Hydrogen |
| D. | Oxygen |
| Answer» C. Hydrogen | |
| 45. |
In photography, the compound of nitrogen used is |
| A. | Potassium nitrate |
| B. | Silver nitrate |
| C. | Ammonium carbonate |
| D. | Ammonium bicarbonate |
| Answer» C. Ammonium carbonate | |
| 46. |
In paper manufacturing, degumming of the raw material is done using |
| A. | sulphuric acid |
| B. | bleaching powder |
| C. | caustic soda |
| D. | nitric acid |
| Answer» D. nitric acid | |
| 47. |
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 | |
| 48. |
In nuclear reactors, which of the following is used as moderator?_x005F_x000D_ |
| A. | Uranium |
| B. | Iron |
| C. | Graphite |
| D. | Platinum |
| Answer» D. Platinum | |
| 49. |
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 | |
| 50. |
In Mendeleev's periodic table, the vertical columns are called:_x005F_x000D_ |
| A. | Units |
| B. | Classes |
| C. | Groups |
| D. | Periods |
| Answer» D. Periods | |