MCQOPTIONS
Saved Bookmarks
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.
| 651. |
The chemical name of 'Hypo' commonly used in photography is |
| A. | odium thiosulphate |
| B. | ilver nitrate |
| C. | odium nitrate |
| D. | ilver iodide |
| Answer» B. ilver nitrate | |
| 652. |
Alum stops bleeding in minor cuts because of |
| A. | olvation |
| B. | mulsion |
| C. | ialysis |
| D. | oagulation |
| Answer» E. | |
| 653. |
Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? |
| A. | ethylene blue |
| B. | ethyl red |
| C. | henolphthaline |
| D. | ethyl orange |
| Answer» E. | |
| 654. |
The common name of sodium bicarbonate is |
| A. | oda ash |
| B. | aking soda |
| C. | oda lime |
| D. | aking powder |
| Answer» C. oda lime | |
| 655. |
In silvery paints, the main constituent present is |
| A. | luminium powder |
| B. | ilver powder |
| C. | ead powder |
| D. | hite lead |
| Answer» B. ilver powder | |
| 656. |
Aluminium salt commonly used to stop bleeding is |
| A. | luminium nitrate |
| B. | luminium sulphate |
| C. | luminium Chloride |
| D. | otash alum |
| Answer» C. luminium Chloride | |
| 657. |
Calcium salts used as fertilizer is : |
| A. | alcium Carbide |
| B. | alcium Carbonate |
| C. | alcium Cyanide |
| D. | alcium Sulphate |
| Answer» E. | |
| 658. |
Which amidst the following is not a gem stone ? |
| A. | at's-eye |
| B. | opaz |
| C. | pal |
| D. | earl |
| Answer» B. opaz | |
| 659. |
Sodium vapour lamps glow with yellow colour. This is due to |
| A. | ublimation of sodium to emit yellow colour |
| B. | he emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum |
| C. | he low ionisation energy of sodium |
| D. | ts ability to absorb all other colours except yellow |
| Answer» C. he low ionisation energy of sodium | |
| 660. |
Persons working in cement plants and lime stone quarries are prone to disease like |
| A. | ancer |
| B. | sthma |
| C. | ilicosis |
| D. | neumoconiosis |
| Answer» D. neumoconiosis | |
| 661. |
Cement is formed by strongly heating a mixture of |
| A. | imestone and graphite |
| B. | imestone and clay |
| C. | halk and graphite |
| D. | lay and graphite |
| Answer» C. halk and graphite | |
| 662. |
Quartz is made of |
| A. | alcium Sulphate |
| B. | alcium Silicate |
| C. | odium Sulphate |
| D. | odium Silicate |
| Answer» E. | |
| 663. |
The main component of liquid bleach is: |
| A. | odium chloride |
| B. | odium hypochlorite |
| C. | ydrochloric acid |
| D. | odium hypochlorate |
| Answer» C. ydrochloric acid | |
| 664. |
The depletion of ozone layer is due to |
| A. | hlorofluorocarbons |
| B. | arbon dioxide |
| C. | ulphur dioxide |
| D. | thane |
| Answer» B. arbon dioxide | |
| 665. |
Which one of the following was used as a chemical weapon in the first world war ? |
| A. | arbon monoxide |
| B. | ydrogen cyanide |
| C. | ustard gas |
| D. | ater gas |
| Answer» D. ater gas | |
| 666. |
Black lung disease occurs in people working in |
| A. | lectroplating industry |
| B. | rganic solvents industry |
| C. | aint manufacturing industry |
| D. | oal mines |
| Answer» E. | |
| 667. |
Which one of the following group of gases contributes to the 'Green House Effect'? |
| A. | arbon dioxide and Methane |
| B. | mmonia and Ozone |
| C. | arbon monoxide and Sulphur dioxide |
| D. | arbon tetraflouride and Nitrous oxide |
| Answer» B. mmonia and Ozone | |
| 668. |
The length of double bond is _______ than single bond. |
| A. | horter |
| B. | onger |
| C. | f same lenght |
| D. | one of the above |
| Answer» B. onger | |
| 669. |
The compound that has the least value for octane number is : |
| A. | -methyl heptane |
| B. | so-octane |
| C. | ,2-dimethyl hexane |
| D. | -heptane |
| Answer» E. | |
| 670. |
The metal used for making aircrafts and rockets is |
| A. | ead |
| B. | luminium |
| C. | ickel |
| D. | opper |
| Answer» D. opper | |
| 671. |
The first organic compound synthesised in the laboratory was |
| A. | rea |
| B. | ric acid |
| C. | actic acid |
| D. | lucose |
| Answer» E. | |
| 672. |
Main pollutants released from iron and steel industry are |
| A. | O, CO2 and SO2 |
| B. | O, SO3 and H2S |
| C. | O2, H2S and NO2 |
| D. | O2, NO2 and SO3 |
| Answer» B. O, SO3 and H2S | |
| 673. |
Global warming is mainly due to accumulation of |
| A. | xides of nitrogen |
| B. | xides of sulphur |
| C. | arbon dioxide |
| D. | arbon monoxide |
| Answer» D. arbon monoxide | |
| 674. |
The major harmful gas emitted by automobile vehicles which causes air pollution is |
| A. | arbon Monoxide |
| B. | ethane |
| C. | arbon dioxide |
| D. | zone gas |
| Answer» B. ethane | |
| 675. |
The major harmful gas emitted by automobile vehicle which causes air pollution is |
| A. | arbon Monoxide |
| B. | ethane |
| C. | arbon dioxide |
| D. | zone gas |
| Answer» B. ethane | |
| 676. |
Concentration of a material which is lethal to 50% animal is called |
| A. | D50 |
| B. | C50 |
| C. | OAEL |
| D. | DI |
| Answer» B. C50 | |
| 677. |
Which is abundant in Gobar gas? |
| A. | arbon dioxide |
| B. | ethane |
| C. | xygen |
| D. | ydrogen |
| Answer» C. xygen | |
| 678. |
Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ? |
| A. | andfills |
| B. | ncineration |
| C. | yrolysis and Gasification |
| D. | ll the above |
| Answer» E. | |
| 679. |
Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? |
| A. | hlorofluorocarbons |
| B. | itrous oxide |
| C. | ulphur dioxide |
| D. | arbon dioxide |
| Answer» B. itrous oxide | |
| 680. |
The gas involved in Bhopal incident was |
| A. | ydrogen sulphide |
| B. | itrogen dioxide |
| C. | ethyl chloride |
| D. | ethyl isocyanate |
| Answer» E. | |
| 681. |
Photo chemical smog is a resultant of the reaction among |
| A. | igh concentration of NO2, O3, and CO in the evening |
| B. | O, CO2 and NO2 at low temperature |
| C. | O, O2 and peroxy acetyl nitrate in the presence of Sunlight |
| D. | O2, O3 and peroxy acetyl nitrate in the presence of Sunlight |
| Answer» E. | |
| 682. |
London smog is found in |
| A. | ummer during day time |
| B. | ummer during morning time |
| C. | inter during morning time |
| D. | inter during day time |
| Answer» D. inter during day time | |
| 683. |
Which one amongst the following is not a Green House gas? |
| A. | itrogen |
| B. | arbon dioxide |
| C. | arbon Monoxide |
| D. | hloro fluoro carbons |
| Answer» B. arbon dioxide | |
| 684. |
The sewage obtained from water closets and urinals is known as |
| A. | anitary waste |
| B. | ndustrial waste |
| C. | arbage |
| D. | ullage |
| Answer» B. ndustrial waste | |
| 685. |
The term 'brown air' is used for |
| A. | cid fumes |
| B. | hotochemical smog |
| C. | ulphurous smog |
| D. | ndustrial smog |
| Answer» C. ulphurous smog | |
| 686. |
Sulphur dioxide level in the atmosphere can be reduced by using |
| A. | ore efficient car engines |
| B. | atalytic converters in industry |
| C. | tatic electricity to attract it in factory chimneys |
| D. | ow - sulphur fuels |
| Answer» E. | |
| 687. |
Which type of radiations are absorbed by the upper layer of the atmosphere? |
| A. | adio-waves |
| B. | nfrared |
| C. | isible |
| D. | ltraviolet |
| Answer» E. | |
| 688. |
An example of major air pollutant is |
| A. | xygen |
| B. | arbon monoxide |
| C. | elium |
| D. | arbon dioxide |
| Answer» C. elium | |
| 689. |
Main source of lead pollution is from |
| A. | ewage |
| B. | eaded gasoline |
| C. | obacco |
| D. | nsecticides |
| Answer» C. obacco | |
| 690. |
The filter over which sewage is sprinkled is called as |
| A. | rickling filter |
| B. | ercolating filter |
| C. | ontact bed |
| D. | ntermittent sand filter |
| Answer» B. ercolating filter | |
| 691. |
Gas released during Bhopal tragedy was : |
| A. | odium isothiocyanate |
| B. | otassium isothiocyanate |
| C. | thyl isocyanate |
| D. | ethyl isocyanate |
| Answer» E. | |
| 692. |
'Acid rain' is caused due to air pollution by |
| A. | arbon dioxide |
| B. | arbon monoxide |
| C. | ethane |
| D. | itrous oxide and sulphur dioxide |
| Answer» E. | |
| 693. |
Mercury is emitted into air by |
| A. | urning coal |
| B. | urning garbage |
| C. | oal fire |
| D. | team engine |
| Answer» C. oal fire | |
| 694. |
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called |
| A. | ists |
| B. | umes |
| C. | erosols |
| D. | moke |
| Answer» D. moke | |
| 695. |
The most common cause of pollution of air is |
| A. | arbon dioxide |
| B. | arbon monoxide |
| C. | ulphur dioxide |
| D. | moke |
| Answer» D. moke | |
| 696. |
Which one of the following metals pollutes the air of a city having large number of automobiles? |
| A. | admium |
| B. | hromium |
| C. | ead |
| D. | opper |
| Answer» D. opper | |
| 697. |
Which of the following caused radioactive pollution along the coast of Kerala ? |
| A. | lutonium |
| B. | inc |
| C. | horium |
| D. | adium |
| Answer» D. adium | |
| 698. |
The Bhopal tragedy was caused by the gas |
| A. | hosgene |
| B. | arbon monoxide |
| C. | ethyl isocyanate |
| D. | hlorine |
| Answer» D. hlorine | |
| 699. |
The Bhopal gas tragedy was caused by the gas |
| A. | ethyl chloride |
| B. | ethyl Isocyanide |
| C. | ethyl Isocyanate |
| D. | ethyl Cyanide |
| Answer» D. ethyl Cyanide | |
| 700. |
Acid rain is caused by |
| A. | O2 and particulates |
| B. | O2and particulates |
| C. | O2and CFCs |
| D. | O2 and NO2 |
| Answer» E. | |