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. |
Which one is a naturally occuring noble gas? |
| A. | odium |
| B. | otassium |
| C. | rgon |
| D. | oron |
| Answer» D. oron | |
| 2. |
A mixture of water and alcohol can be separated by |
| A. | iltration |
| B. | vaporation |
| C. | ecantation |
| D. | istillation |
| Answer» E. | |
| 3. |
Sea water can be purified by the process of |
| A. | istillation |
| B. | vaporation |
| C. | iltration |
| D. | ractional distillation |
| Answer» B. vaporation | |
| 4. |
The temperature of oxy-acetylene flame is around |
| A. | 800°C |
| B. | 200°C |
| C. | 600°C |
| D. | 000°C |
| Answer» E. | |
| 5. |
Water is not effective in extinguishing a fire caused by petrol because |
| A. | he flame is too hot for water to cool it down |
| B. | ater and petrol react chemically |
| C. | ater and petrol are miscible with each other |
| D. | ater and petrol are immiscible with each other and petrol which forms the upper layer continues to burn |
| Answer» E. | |
| 6. |
Which of the following is the petroleum wax ? |
| A. | ees wax |
| B. | arnauba wax |
| C. | araffin wax |
| D. | ojoba wax |
| Answer» D. ojoba wax | |
| 7. |
White coal is |
| A. | ranium |
| B. | ydro-electricity |
| C. | iamond |
| D. | one of these |
| Answer» E. | |
| 8. |
Petroleum consists of a mixture of |
| A. | arbohydrates |
| B. | arbonates |
| C. | ydrocarbons |
| D. | arbides |
| Answer» D. arbides | |
| 9. |
Piped Natural Gas (PNG) is used for |
| A. | ining |
| B. | elding |
| C. | naesthesia |
| D. | ooking |
| Answer» E. | |
| 10. |
Petroleum is a mixture of |
| A. | lements |
| B. | ydrocarbons |
| C. | olymers |
| D. | alts |
| Answer» C. olymers | |
| 11. |
Which one of the following is known as the 'brown coal'? |
| A. | nthracite |
| B. | ituminous |
| C. | oke |
| D. | ignite |
| Answer» E. | |
| 12. |
Domestic cooking gas consists mostly of |
| A. | ethane and ethane |
| B. | iquified butane and isobutane |
| C. | ydrogen and acetylene |
| D. | thylene and carbon monoxide |
| Answer» C. ydrogen and acetylene | |
| 13. |
The charcoal used to decolourise brown sugar solution is |
| A. | ood charcoal |
| B. | oconut charcoal |
| C. | nimal charcoal |
| D. | ugar charcoal |
| Answer» D. ugar charcoal | |
| 14. |
Indane gas is mixture of |
| A. | utane and hydrogen |
| B. | utane and oxygen |
| C. | utane and propane |
| D. | ethane and oxygen |
| Answer» D. ethane and oxygen | |
| 15. |
Which of the following type of coal has the lowest proportion of volatile matter ? |
| A. | ignite |
| B. | eat |
| C. | ituminous |
| D. | nthracite |
| Answer» E. | |
| 16. |
The quality of petrol is expressed in terms of |
| A. | etane number |
| B. | old number |
| C. | ctane number |
| D. | dded unlead compounds |
| Answer» D. dded unlead compounds | |
| 17. |
Which of the following is used to increase the anti-knocking property of petrol ? |
| A. | etramethyl lead |
| B. | etraethyl lead |
| C. | rimethyl lead |
| D. | riethyl lead |
| Answer» C. rimethyl lead | |
| 18. |
Which one of the following is not coal variety? |
| A. | ignite |
| B. | ituminous |
| C. | olomite |
| D. | eat |
| Answer» D. eat | |
| 19. |
L.P.G. is mostly liquefied |
| A. | ydrogen |
| B. | xygen |
| C. | utane |
| D. | ethane |
| Answer» D. ethane | |
| 20. |
The main source of Naphthalene is |
| A. | harcoal |
| B. | amphor |
| C. | oal-tar |
| D. | iesel |
| Answer» D. iesel | |
| 21. |
Submarines move under water. They have engines that run on |
| A. | etrol and oxygen |
| B. | iesel |
| C. | atteries |
| D. | team |
| Answer» C. atteries | |
| 22. |
The gas that usually causes explosions in coal mines is |
| A. | ydrogen |
| B. | arbon monoxide |
| C. | ir |
| D. | ethane |
| Answer» E. | |
| 23. |
The chief source of naphthalene is |
| A. | oal-tar |
| B. | iesel |
| C. | harcoal |
| D. | amphor |
| Answer» B. iesel | |
| 24. |
Metal are good conductors, because |
| A. | hey contain free electrons |
| B. | he molecules in them are very close to each other |
| C. | he molecules in them collide very freely |
| D. | hey contain reflecting surface |
| Answer» B. he molecules in them are very close to each other | |
| 25. |
Which among the following is liquid non-metal ? |
| A. | ercury |
| B. | romine |
| C. | ater |
| D. | lcohol |
| Answer» C. ater | |
| 26. |
The non-metal found in the liquid state is |
| A. | romine |
| B. | itrogen |
| C. | luorine |
| D. | hlorine |
| Answer» B. itrogen | |
| 27. |
The lustre of the metals is because of |
| A. | igh density, due to closed packing of atoms |
| B. | igh polish |
| C. | eflection of light due to the presence of free electrons |
| D. | bsorption of light due to the presence of cavities |
| Answer» D. bsorption of light due to the presence of cavities | |
| 28. |
Mercury is a : |
| A. | olid metal |
| B. | iquid metal |
| C. | olid non-metal |
| D. | iquid non-metal |
| Answer» C. olid non-metal | |
| 29. |
Iron rusts quickly in |
| A. | ain water |
| B. | ea water |
| C. | istilled water |
| D. | iver water |
| Answer» C. istilled water | |
| 30. |
Identify the metal which is non toxic in nature. |
| A. | hromium |
| B. | old |
| C. | admium |
| D. | obalt |
| Answer» C. admium | |
| 31. |
The wire of flash bulb is made of: |
| A. | opper |
| B. | arium |
| C. | agnesium |
| D. | ilver |
| Answer» D. ilver | |
| 32. |
Which metal does not undergo corrosion due to the formation of oxide layer? |
| A. | opper |
| B. | ron |
| C. | luminium |
| D. | inc |
| Answer» D. inc | |
| 33. |
Which of the following is very reactive and kept in kerosene? |
| A. | odium |
| B. | otassium |
| C. | odine |
| D. | romine |
| Answer» B. otassium | |
| 34. |
When iron rusts, its weight |
| A. | ecreases |
| B. | ncreases |
| C. | emains the same |
| D. | irst increases and then decreases |
| Answer» C. emains the same | |
| 35. |
The rusting of iron is a/an |
| A. | hysical change |
| B. | lectrochemical change |
| C. | lectrical change |
| D. | one of the above |
| Answer» C. lectrical change | |
| 36. |
White phosphorus is generally kept under |
| A. | lcohol |
| B. | ater |
| C. | lycerine |
| D. | erosene oil |
| Answer» C. lycerine | |
| 37. |
The first metal used by a man was |
| A. | opper |
| B. | ilver |
| C. | ronze |
| D. | rass |
| Answer» B. ilver | |
| 38. |
A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be |
| A. | ilver |
| B. | opper |
| C. | luminium |
| D. | inc |
| Answer» C. luminium | |
| 39. |
At room temperature, the metal that remains liquid is: |
| A. | ercury |
| B. | latinum |
| C. | ead |
| D. | inc |
| Answer» B. latinum | |
| 40. |
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing is |
| A. | eon |
| B. | rypton |
| C. | rgon |
| D. | elium |
| Answer» E. | |
| 41. |
Helium gas is filled in balloons because |
| A. | ts atomic number is 2 |
| B. | t is lighter than air |
| C. | t is one of the constitutents of water |
| D. | t is a noble gas |
| Answer» C. t is one of the constitutents of water | |
| 42. |
Which one of the following elements is an example of noble gas ? |
| A. | itrogen |
| B. | ydrogen |
| C. | hlorine |
| D. | elium |
| Answer» E. | |
| 43. |
Electric bulbs are filled with : |
| A. | itrogen |
| B. | arbon dioxide |
| C. | rgon |
| D. | xygen |
| Answer» D. xygen | |
| 44. |
Iron filings can be separated from a heterogeneous mixture using the technique of : |
| A. | ublimation |
| B. | agnetization |
| C. | edimentation |
| D. | vaporation |
| Answer» C. edimentation | |
| 45. |
Impure camphor is purified by |
| A. | ublimation |
| B. | ractional crystallisation |
| C. | ractional distillation |
| D. | team distillation |
| Answer» B. ractional crystallisation | |
| 46. |
Which among the following metals provides amphoteric oxide ? |
| A. | odium |
| B. | ilver |
| C. | luminium |
| D. | alcium |
| Answer» D. alcium | |
| 47. |
Which of the following processes is used for the production of Biodiesel ? |
| A. | ransamination |
| B. | ranscription |
| C. | ransesterification |
| D. | ranslation |
| Answer» D. ranslation | |
| 48. |
Which variety of coal contains recognisable traces of the original plant material ? |
| A. | nthracite |
| B. | ignite |
| C. | eat |
| D. | itumen |
| Answer» D. itumen | |
| 49. |
Which of the following is the major constituent of LPG? |
| A. | ethane |
| B. | thane |
| C. | ropane |
| D. | utane |
| Answer» E. | |
| 50. |
Thermal electricity is generated by using which of these ? |
| A. | oal only |
| B. | oal and Natural Gas only |
| C. | oal, Natural Gas and Petroleum |
| D. | one of these |
| Answer» D. one of these | |