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. |
By which of the following processes are metals of high reactivity extracted from purified molten ore? |
| A. | Reduction by an appropriate reducing agent |
| B. | Roasting |
| C. | Electrolysis |
| D. | Calcination |
| Answer» D. Calcination | |
| 2. |
By volume, 78% of air is _______________ |
| A. | nitrogen |
| B. | oxygen |
| C. | hydrogen |
| D. | helium |
| Answer» B. oxygen | |
| 3. |
By volume, 21% of air is _______________._x005F_x000D_ |
| A. | hydrogen |
| B. | oxygen |
| C. | nitrogen |
| D. | carbon dioxide |
| Answer» C. nitrogen | |
| 4. |
By how many atomic mass units do subsequent members of homologous series differ? |
| A. | 26 |
| B. | 32 |
| C. | 20 |
| D. | 14 |
| Answer» E. | |
| 5. |
By using which foam the Researchers from Indian Institute of Technology – Bombay have made a low cost piezo resistive vibration sensor? |
| A. | Only Polyurethane |
| B. | Only Polyethylene |
| C. | Both Polyurethane and Polyethylene |
| D. | Neither Poly urethane nor Polyethylene |
| Answer» C. Both Polyurethane and Polyethylene | |
| 6. |
Butter is colloid formed when |
| A. | Proteins are dispersed in water |
| B. | Water is dispersed in fat |
| C. | Fat globules are dispersed in water |
| D. | Carbohydrates are dissolved in water |
| Answer» D. Carbohydrates are dissolved in water | |
| 7. |
Burning Magnesium ribbon produces white ash, which dissolves in water to form____._x005F_x000D_ |
| A. | Magnesium Halides |
| B. | Magnesium Oxide |
| C. | Magnesium Hydroxide |
| D. | Magnesium Sulphate |
| Answer» D. Magnesium Sulphate | |
| 8. |
Bullet proof material is made up of which polymer? |
| A. | Poly carbonates |
| B. | Poly vinyl |
| C. | Poly amides |
| D. | Polychloride |
| Answer» B. Poly vinyl | |
| 9. |
Browning of paper in old books is caused by |
| A. | oxidation of cellulose |
| B. | collection of dust |
| C. | frequent use |
| D. | lack of aeration |
| Answer» B. collection of dust | |
| 10. |
Brownish film formed on iron when left in open is called? |
| A. | Dust |
| B. | Shovel |
| C. | Spade |
| D. | Rust |
| Answer» E. | |
| 11. |
Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water |
| A. | Magnesium |
| B. | Calcium |
| C. | Manganese |
| D. | Chromium |
| Answer» D. Chromium | |
| 12. |
Brass is an alloy made of |
| A. | Copper and Tin |
| B. | Copper and Zinc |
| C. | Copper and Aluminium |
| D. | Copper and Iron |
| Answer» C. Copper and Aluminium | |
| 13. |
Boron cannot form which one of the following anions?_x005F_x000D_ (1)Â BO2-_x005F_x000D_ (2)Â BF63-_x005F_x000D_ (3)Â BH4-_x005F_x000D_ (4)Â B(OH)4- |
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
| Answer» C. Option 3 | |
| 14. |
Bohr’s model is related to which of the following?_x005F_x000D_ |
| A. | Plum pudding model |
| B. | Nuclear theory |
| C. | Concept of quantization of energy |
| D. | Dual nature of electron |
| Answer» D. Dual nature of electron | |
| 15. |
Brass gets discoloured in air because of the presence of which of the following gases in air  ? |
| A. | Hydrogen sulphide |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Carbon dioxide |
| Answer» B. Oxygen | |
| 16. |
Blue litmus paper is converted into red in solution of _______ |
| A. | Acid |
| B. | Base |
| C. | Alkali |
| D. | Salt |
| Answer» B. Base | |
| 17. |
Blotting paper absorbs ink due to |
| A. | Coarse nature of paper |
| B. | Osmosis |
| C. | Capillary action |
| D. | Siphoning |
| Answer» D. Siphoning | |
| 18. |
Bleaching powder is used in drinking water as |
| A. | Disinfectant |
| B. | Antibiotic |
| C. | Coagulant |
| D. | Antiseptic |
| Answer» B. Antibiotic | |
| 19. |
Biogas is produced from biomass by |
| A. | destructive distillation |
| B. | fractional distillation |
| C. | anaerobic fermentation |
| D. | dry distillation |
| Answer» D. dry distillation | |
| 20. |
Binomial Nomenclature was founded by |
| A. | Charles Darwin |
| B. | Robert Nucleus |
| C. | Carl Linnaeus |
| D. | Lamarck |
| Answer» D. Lamarck | |
| 21. |
Besides CO2, the other green house gas is |
| A. | CH4 |
| B. | N2 |
| C. | Ar |
| D. | O2 |
| Answer» B. N2 | |
| 22. |
Beryl is an ore/mineral of |
| A. | Nickel |
| B. | Beryllium |
| C. | Lead |
| D. | Tin |
| Answer» C. Lead | |
| 23. |
Benzene is ______ in ethyl alcohol. |
| A. | soluble |
| B. | solute |
| C. | insoluble |
| D. | insolate |
| Answer» D. insolate | |
| 24. |
Barium loses ____ electrons to achieve noble gas electron configuration. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 25. |
Bee sting contains________________ |
| A. | An acidic liquid |
| B. | a salt solution |
| C. | an alkaline liquid |
| D. | a corrosive liquid |
| Answer» B. a salt solution | |
| 26. |
Bauxite is an ore/mineral of |
| A. | Aluminium |
| B. | Beryllium |
| C. | Lead |
| D. | Tin |
| Answer» B. Beryllium | |
| 27. |
Barbituric Acid was synthesized in 1864 by |
| A. | Adolf von Baeyer |
| B. | Marie Curie |
| C. | Mendeleev |
| D. | John Dalton |
| Answer» B. Marie Curie | |
| 28. |
Baking soda is used ______._x005F_x000D_ Â _x005F_x000D_ I. for making baking powder_x005F_x000D_ II. in soda-acid fire extinguishers_x005F_x000D_ III. to neutralize excess acid in the stomach_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. | |
| 29. |
ATP stands for - |
| A. | Adenosine triphosphate |
| B. | Alanine triphosphate |
| C. | Adrenalin triphosphate |
| D. | Asparagine triphosphate |
| Answer» B. Alanine triphosphate | |
| 30. |
ATP generally energizes a cellular process by |
| A. | direct chemical transfer of a phosphate group |
| B. | becoming oxidized |
| C. | releasing heat upon hydrolysis |
| D. | direct chemical transfer of a sugar group |
| Answer» B. becoming oxidized | |
| 31. |
Atoms of the same element can differ in |
| A. | Atomic number |
| B. | Atomic mass |
| C. | electrons |
| D. | None of the above |
| Answer» C. electrons | |
| 32. |
Atoms of same element having different mass numbers are called__________ |
| A. | Isobars |
| B. | Isotopes |
| C. | Isotones |
| D. | Isomers |
| Answer» C. Isotones | |
| 33. |
Atoms have no electric charge because they |
| A. | have same number of electrons and neutrons |
| B. | have same number of electrons and protons |
| C. | have same number of protons and neutrons |
| D. | have same number of protons, electrons and neutrons |
| Answer» C. have same number of protons and neutrons | |
| 34. |
Atoms Are Composed Of |
| A. | Electrons and Protons |
| B. | Protons and Nuclei |
| C. | Only Electrons |
| D. | Electrons and Nuclei |
| Answer» E. | |
| 35. |
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 | |
| 36. |
Atomic numbers of four elements are as follows : F(9), P(15), Cl(17), Ar(18). Which of the following two elements would be chemically similar? |
| A. | F and Ar |
| B. | Cl and P |
| C. | F and P |
| D. | F and Cl |
| Answer» E. | |
| 37. |
Atomic number of which of the following elements is greater than that of Zinc |
| A. | Copper |
| B. | Iron |
| C. | Chromium |
| D. | Bromine |
| Answer» E. | |
| 38. |
Atomic number of which of the following elements is greater than that of Aluminium? |
| A. | Phosphorus |
| B. | Neon |
| C. | Magnesium |
| D. | Sodium |
| Answer» B. Neon | |
| 39. |
Atomic number of which of the following elements is greater than that of Magnesium |
| A. | Neon |
| B. | Fluorine |
| C. | Sodium |
| D. | Aluminium |
| Answer» E. | |
| 40. |
Atomic number of which of the following elements is greater than that of Phosphorus? |
| A. | Aluminium |
| B. | Silicon |
| C. | Chlorine |
| D. | Magnesium |
| Answer» D. Magnesium | |
| 41. |
Atomic number of which of the following elements is greater than that of Neon? |
| A. | Oxygen |
| B. | Magnesium |
| C. | Nitrogen |
| D. | Boron |
| Answer» C. Nitrogen | |
| 42. |
Atomic number of which of the following elements is greater than that of Iodine |
| A. | Silver |
| B. | Bromine |
| C. | Platinum |
| D. | Zinc |
| Answer» D. Zinc | |
| 43. |
Atomic number of which of the following elements is greater than that of Fluorine? |
| A. | Sodium |
| B. | Beryllium |
| C. | Nitrogen |
| D. | Boron |
| Answer» B. Beryllium | |
| 44. |
Atomic number of which of the following elements is greater than that of Copper? |
| A. | Iron |
| B. | Chromium |
| C. | Zinc |
| D. | Manganese |
| Answer» D. Manganese | |
| 45. |
Atomic number of which of the following elements is greater than that of Chlorine |
| A. | Potassium |
| B. | Sulphur |
| C. | Aluminium |
| D. | Phosphorus |
| Answer» B. Sulphur | |
| 46. |
Atomic number of which of the following elements is greater than that of Barium_x005F_x000D_ |
| A. | Iodine |
| B. | Silver |
| C. | Bromine |
| D. | Gold |
| Answer» E. | |
| 47. |
Atomic number of which of the following elements is greater than that of Calcium? |
| A. | Chlorine |
| B. | Argon |
| C. | Sulphur |
| D. | Scandium |
| Answer» E. | |
| 48. |
Atomic number of which of the following elements is greater than that of Bromine?_x005F_x000D_ |
| A. | Silver |
| B. | Copper |
| C. | Iron |
| D. | Chromium |
| Answer» B. Copper | |
| 49. |
Atomic Number of Hydrogen is _______. |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» E. | |
| 50. |
Atomic number of an atom gives the number of which of the following ? |
| A. | electrons |
| B. | protons |
| C. | neutrons |
| D. | neutrons and protons |
| Answer» C. neutrons | |