MCQOPTIONS
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MCQOPTIONS
This section includes 856 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The formula CH-CO-CH represents |
| A. | Acetone |
| B. | Acetic acid |
| C. | Acetophenone |
| D. | Phenyl acetate |
| Answer» D. Phenyl acetate | |
| 2. |
The isomerism which exists between CHCHCI and CHCI. CHCI is |
| A. | chain isomerism |
| B. | functional group isomerism |
| C. | positional isomerism |
| D. | metamerism |
| Answer» D. metamerism | |
| 3. |
The organic reaction represented by equation CH - CH = O + HNOH gives CH - CH - NH + HO is an example of |
| A. | an addition reaction |
| B. | a condensation reaction |
| C. | an oxidation reaction |
| D. | an elimination reaction |
| Answer» C. an oxidation reaction | |
| 4. |
The number of electrons presents in H is |
| A. | zero |
| B. | one |
| C. | two |
| D. | three |
| Answer» B. one | |
| 5. |
The maximum number of isomers for an alkene with molecular formula CH is |
| A. | 5 |
| B. | 4 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 6. |
The number of g-molecule of oxygen in 6.02 x 10CO molecules is |
| A. | 1 gram of molecule |
| B. | 0.5 gram of molecule |
| C. | 5 gram of molecule |
| D. | 10 gram of molecule |
| Answer» D. 10 gram of molecule | |
| 7. |
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2 orbit to 3 orbit is |
| A. | 5x/36 |
| B. | 5x |
| C. | 7.2 x |
| D. | x/6 |
| Answer» B. 5x | |
| 8. |
The metal does not give H on treatment with dilute HCL is |
| A. | Zn |
| B. | Fe |
| C. | Ag |
| D. | Ca |
| Answer» D. Ca | |
| 9. |
The most abundant rare gas in the atmosphere is |
| A. | He |
| B. | Ne |
| C. | Ar |
| D. | Xe |
| Answer» D. Xe | |
| 10. |
The Latin word means ant. The name formic acid is derived from this Latin word because |
| A. | this acid, in ancient times, was used to eliminate ant-hills |
| B. | this corrosive acid is secreted by ants to drive away their enemies |
| C. | this acid was first obtained by the distillation of ants |
| D. | ants are attracted by the odour of this acid |
| Answer» D. ants are attracted by the odour of this acid | |
| 11. |
The mass of PO that will be obtained from the reaction of 1.33 gram of P and 5.07 of oxygen is |
| A. | 2.05 gram |
| B. | 3.05 gram |
| C. | 4.05 gram |
| D. | 5.05 gram |
| Answer» C. 4.05 gram | |
| 12. |
The number of d-electrons in Fe (Z = 26) is not equal to that of |
| A. | -electrons in Ne(Z = 10) |
| B. | -electrons in Mg(Z = 12) |
| C. | -electrons in Fe(Z = 26) |
| D. | -electrons in CI(Z = 17) |
| Answer» E. | |
| 13. |
Aqua regia is a 1 : 3 mixture, by volume, of |
| A. | onc. nitric acid and conc. hydrochloric acid |
| B. | onc. hydrochloric acid and conc. nitric acid |
| C. | onc. nitric acid and conc. sulphuric acid |
| D. | onc. sulphuric acid and conc. nitric acid |
| Answer» B. onc. hydrochloric acid and conc. nitric acid | |
| 14. |
The value of Avogadro Number is |
| A. | .023 × 1022 |
| B. | .023 × 1023 |
| C. | .023 × 1024 |
| D. | .023 × 1025 |
| Answer» C. .023 × 1024 | |
| 15. |
The percentage of nitrogen present in ammonium sulphate is : |
| A. | 7% |
| B. | 5% |
| C. | 0.5% |
| D. | 8% |
| Answer» B. 5% | |
| 16. |
Number of 6.023 × 1023 atoms present in one mole of a gas at STP is |
| A. | .023 × 1020 |
| B. | .023 × 1023 |
| C. | .023 × 10–20 |
| D. | .023 × 10–23 |
| Answer» C. .023 × 10–20 | |
| 17. |
What is the mass percentage of oxygen in carbon dioxide (CO2)? |
| A. | 0.5% |
| B. | 0.9 % |
| C. | 5.8 % |
| D. | 2.7 % |
| Answer» E. | |
| 18. |
Which of the following metals is used in Space Crafts to withstand high temperatures ? |
| A. | e |
| B. | i |
| C. | i |
| D. | b |
| Answer» C. i | |
| 19. |
The “King of Metals” is : |
| A. | old |
| B. | ilver |
| C. | ron |
| D. | luminium |
| Answer» B. ilver | |
| 20. |
Which of the following metals occurs in free state ? |
| A. | opper |
| B. | ron |
| C. | inc |
| D. | ead |
| Answer» E. | |
| 21. |
Which one is the most reactive gaseous element? |
| A. | hlorine |
| B. | romine |
| C. | odine |
| D. | lourine |
| Answer» E. | |
| 22. |
What is the mass percentage of carbon in carbon dioxide (CO2)? |
| A. | 5.8 % |
| B. | 0.1 % |
| C. | 7.3 % |
| D. | 2.3 % |
| Answer» D. 2.3 % | |
| 23. |
If there is one million Mg2+ ions in MgCl2, how many chloride ions are there? |
| A. | wo million |
| B. | ne million |
| C. | alf a million |
| D. | en million |
| Answer» B. ne million | |
| 24. |
The weight of 6.023 × 1023 atoms of carbon is |
| A. | 2 gms |
| B. | 20 gms |
| C. | .2 gms |
| D. | .12 gms |
| Answer» B. 20 gms | |
| 25. |
Chemically ‘Quick Silver' is known as |
| A. | ercury |
| B. | ilver |
| C. | luminium |
| D. | opper |
| Answer» B. ilver | |
| 26. |
The element which is used for vulcanizing rubber |
| A. | ulphur |
| B. | romine |
| C. | ilicon |
| D. | hosphorus |
| Answer» B. romine | |
| 27. |
Which of the following metals has least melting point ? |
| A. | old |
| B. | ilver |
| C. | ercury |
| D. | opper |
| Answer» D. opper | |
| 28. |
Philosopher’s Wool is |
| A. | inc carbonate |
| B. | inc sulphate |
| C. | inc oxide |
| D. | inc blende |
| Answer» D. inc blende | |
| 29. |
Among the following, which is always found in free-state in nature? |
| A. | old |
| B. | ilver |
| C. | odium |
| D. | opper |
| Answer» B. ilver | |
| 30. |
What material is used to make electric heater coil ? |
| A. | opper |
| B. | ron |
| C. | ilver |
| D. | ichrome |
| Answer» E. | |
| 31. |
Among the following the hardest metal is |
| A. | old |
| B. | ron |
| C. | latinum |
| D. | ungsten |
| Answer» E. | |
| 32. |
Which among the following is found in chlorophyll ? |
| A. | a2+ |
| B. | g2+ |
| C. | e2+ |
| D. | l3+ |
| Answer» C. e2+ | |
| 33. |
The wire of flash bulbs is made up of |
| A. | g |
| B. | a |
| C. | u |
| D. | g |
| Answer» B. a | |
| 34. |
The substance which does not expand on going from liquid state to solid state is |
| A. | ater |
| B. | ast-iron |
| C. | luminium |
| D. | ype metal |
| Answer» E. | |
| 35. |
The ore of Aluminium is |
| A. | luorspar |
| B. | auxite |
| C. | halco pyrites |
| D. | ematite |
| Answer» C. halco pyrites | |
| 36. |
The most abundant metal in the Earth’s crust is |
| A. | inc |
| B. | opper |
| C. | luminium |
| D. | ron |
| Answer» D. ron | |
| 37. |
Which is the purest commercial form of iron ? |
| A. | ig iron |
| B. | teel |
| C. | tainless steel |
| D. | rought iron |
| Answer» E. | |
| 38. |
Solder metal is an alloy of |
| A. | ead and tin |
| B. | ead and antimony |
| C. | opper and zinc |
| D. | opper and tin |
| Answer» B. ead and antimony | |
| 39. |
Slag is a name given for |
| A. | olten iron |
| B. | olten sand |
| C. | olten alumina |
| D. | olten calcium silicate |
| Answer» D. olten calcium silicate | |
| 40. |
Galvanised iron is made by coating iron with |
| A. | inc |
| B. | ickel |
| C. | hromium |
| D. | ulphur |
| Answer» B. ickel | |
| 41. |
Burning pyrites ore gives out |
| A. | arbon dioxide gas |
| B. | ulphur dioxide gas |
| C. | itrogen dioxide gas |
| D. | itric oxide gas |
| Answer» C. itrogen dioxide gas | |
| 42. |
What is the principal ore of aluminium ? |
| A. | olomite |
| B. | opper |
| C. | ignite |
| D. | auxite |
| Answer» E. | |
| 43. |
Which one of the following minerals is found in pure form? |
| A. | ron |
| B. | opper |
| C. | auxite |
| D. | anganese |
| Answer» C. auxite | |
| 44. |
Which of the following elements is not present in stainless steel? |
| A. | ron |
| B. | ungsten |
| C. | hromium |
| D. | ickel |
| Answer» C. hromium | |
| 45. |
Alcoholic (– OH) group can be identified by : |
| A. | ollen's Reagent Test |
| B. | sterification Test |
| C. | eCl3Test |
| D. | zonolysis Reaction |
| Answer» D. zonolysis Reaction | |
| 46. |
Two elements which can form a large number of compounds are |
| A. | arbon and Hydrogen |
| B. | arbon and Nitrogen |
| C. | arbon and Oxygen |
| D. | arbon and Sulphur |
| Answer» B. arbon and Nitrogen | |
| 47. |
Vinegar is an aqueous solution of |
| A. | xalic acid |
| B. | itric acid |
| C. | ydrochloric acid |
| D. | cetic acid |
| Answer» E. | |
| 48. |
Organic compounds are |
| A. | ovalent compounds |
| B. | onic compounds |
| C. | o-ordination compounds |
| D. | nterstitial compounds |
| Answer» B. onic compounds | |
| 49. |
The gas produced in marshy places due to decomposition of vegetation is |
| A. | arbon monoxide |
| B. | arbon dioxide |
| C. | ulphur dioxide |
| D. | ethane |
| Answer» E. | |
| 50. |
In the periodic table of elements, on moving from left to right across a period, the atomic radius |
| A. | ecreases |
| B. | ncreases |
| C. | emains unchanged |
| D. | oes not follow a definite pattern |
| Answer» B. ncreases | |