MCQOPTIONS
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MCQOPTIONS
This section includes 1300 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
What is the nature of metal? |
| A. | Moody |
| B. | electronegative |
| C. | electropositive |
| D. | none of these |
| Answer» D. none of these | |
| 852. |
Which of the following salts contributes maximum to the salinity of sea water? |
| A. | Sodium chloride |
| B. | Sodium sulphate |
| C. | calcium chloride |
| D. | sodium bicarbonate |
| Answer» D. sodium bicarbonate | |
| 853. |
Which of the following fuels produces the least environmental pollution? |
| A. | Coal |
| B. | kerosene |
| C. | hydrogen |
| D. | diesel |
| Answer» D. diesel | |
| 854. |
The fuel used to propel rockets is called? |
| A. | coal gas |
| B. | propellant |
| C. | Coke |
| D. | biomass |
| Answer» C. Coke | |
| 855. |
Which chemical is used as a stabilizer in photography? |
| A. | Sodium sulphate |
| B. | sodium thiosulfate |
| C. | calcium chloride |
| D. | none of these |
| Answer» C. calcium chloride | |
| 856. |
Which metal is protected by its own oxide? |
| A. | aluminum |
| B. | silver |
| C. | Gold |
| D. | iron |
| Answer» B. silver | |
| 857. |
Which metal can be cut with a knife? |
| A. | iron |
| B. | lead |
| C. | sodium |
| D. | copper |
| Answer» D. copper | |
| 858. |
Common salt? |
| A. | sodium carbonate |
| B. | Sodium chloride |
| C. | sodium hydroxide |
| D. | none of these |
| Answer» C. sodium hydroxide | |
| 859. |
What is the baking powder used to make bread? |
| A. | Sodium chloride |
| B. | Sodium sulphate |
| C. | sodium bicarbonate |
| D. | none of these |
| Answer» D. none of these | |
| 860. |
Which scientist first created the periodic table? |
| A. | rutherford |
| B. | Lewis |
| C. | mendeleev |
| D. | none of these |
| Answer» D. none of these | |
| 861. |
Who propounded the octet law related to the classification of elements? |
| A. | loire mayor |
| B. | newlands |
| C. | mendeleev |
| D. | dobereiner |
| Answer» C. mendeleev | |
| 862. |
Who propounded the law of the triplet related to the classification of elements? |
| A. | mendeleev |
| B. | dobereiner |
| C. | rutherford |
| D. | newlands |
| Answer» C. rutherford | |
| 863. |
All gases have the same number of molecules in the same volume under the same conditions of temperature and pressure. What is this rule called? |
| A. | boyle's law |
| B. | charles law |
| C. | avogadro's law |
| D. | none of these |
| Answer» D. none of these | |
| 864. |
The energy of an ideal gas depends on? |
| A. | on volume |
| B. | on the number of moles |
| C. | on pressure |
| D. | at temperature |
| Answer» C. on pressure | |
| 865. |
Which of the following laws is not related to gases? |
| A. | Faraday's law |
| B. | boyle's law |
| C. | Charles' law |
| D. | Gay-Lussac's Law |
| Answer» B. boyle's law | |
| 866. |
Who was the first to classify the elements? |
| A. | loire mayor |
| B. | mendeleev |
| C. | dobereiner |
| D. | none of these |
| Answer» D. none of these | |
| 867. |
Who discovered the catalyst? |
| A. | rutherford |
| B. | Lewis |
| C. | Bergilius |
| D. | Kosel |
| Answer» D. Kosel | |
| 868. |
What is the circle line drawn to show the volume pressure behavior of gases at different fixed temperatures called? |
| A. | isothermals |
| B. | isochore |
| C. | isocurves |
| D. | none of these |
| Answer» B. isochore | |
| 869. |
Which type of fire extinguisher is used for petrol fire? |
| A. | soda acid |
| B. | powdered |
| C. | foamy |
| D. | none of these |
| Answer» D. none of these | |
| 870. |
Is a gas lighter than air? |
| A. | propane |
| B. | oxygen |
| C. | chlorine |
| D. | ammonia |
| Answer» E. | |
| 871. |
What does R represent in the gaseous equation pV = nRT? |
| A. | one gram of gas |
| B. | one mole of gas |
| C. | Of a liter of gas |
| D. | none of these |
| Answer» C. Of a liter of gas | |
| 872. |
Which of the following is not a fuel element? |
| A. | radium |
| B. | Thorium |
| C. | helium |
| D. | uranium |
| Answer» D. uranium | |
| 873. |
Brown coal is known as? |
| A. | lignite |
| B. | bituminous |
| C. | Pete |
| D. | none of these |
| Answer» B. bituminous | |
| 874. |
Which of the following fuels causes minimum pollution in the atmosphere? |
| A. | hydrogen |
| B. | diesel |
| C. | Coal |
| D. | none of these |
| Answer» B. diesel | |
| 875. |
What type of combustion is respiration? |
| A. | slow combustion |
| B. | blast combustion |
| C. | quick combustion |
| D. | automatic combustion |
| Answer» B. blast combustion | |
| 876. |
By which process cooking oil can be converted into vegetable ghee? |
| A. | distillation |
| B. | oxidation |
| C. | hydrogenation |
| D. | none of these |
| Answer» D. none of these | |
| 877. |
Pencil has lead? |
| A. | charcoal |
| B. | Coal |
| C. | graphite |
| D. | none of these |
| Answer» D. none of these | |
| 878. |
Which one of the following has maximum fuel value? |
| A. | natural gas |
| B. | hydrogen |
| C. | charcoal |
| D. | none of these |
| Answer» C. charcoal | |
| 879. |
What is the essential basic element of all bio-compounds? |
| A. | oxygen |
| B. | Carbon |
| C. | nitrogen |
| D. | sulfur |
| Answer» C. nitrogen | |
| 880. |
The minimum temperature at which a substance starts burning is called that substance? |
| A. | Combustion heat |
| B. | thermal heat |
| C. | calorific value |
| D. | all these |
| Answer» B. thermal heat | |
| 881. |
Which gas is used to fill the tires of aircraft? |
| A. | nitrogen |
| B. | helium |
| C. | hydrogen |
| D. | oxygen |
| Answer» C. hydrogen | |
| 882. |
Common type of coal? |
| A. | bituminous |
| B. | Pete |
| C. | lignite |
| D. | Coal |
| Answer» B. Pete | |
| 883. |
What is heavy water? |
| A. | Mandak |
| B. | fuel |
| C. | coolant |
| D. | ore |
| Answer» B. fuel | |
| 884. |
Which of the following is generally called the fuel of the future? |
| A. | methane |
| B. | hydrogen |
| C. | natural gas |
| D. | all these |
| Answer» C. natural gas | |
| 885. |
To increase the life of an electric bulb, it is usually filled with |
| A. | nitrogen |
| B. | organ |
| C. | hydrogen |
| D. | krypton |
| Answer» C. hydrogen | |
| 886. |
Who is credited with discovering inert gases? |
| A. | ramsey |
| B. | locker |
| C. | Shelley |
| D. | none of these |
| Answer» B. locker | |
| 887. |
What is the least amount of element found in the earth's crust? |
| A. | astatine |
| B. | chlorine |
| C. | manganese |
| D. | none of these |
| Answer» B. chlorine | |
| 888. |
What is another name for hydrochloric acid? |
| A. | martial acid |
| B. | muriatic acid |
| C. | oleum |
| D. | none of these |
| Answer» C. oleum | |
| 889. |
Which acid is used for writing on glass? |
| A. | hydrogen fluoride |
| B. | nitric acid |
| C. | sulfuric acid |
| D. | none of these |
| Answer» B. nitric acid | |
| 890. |
Which acid is found in human stomach? |
| A. | HF |
| B. | HI |
| C. | HCI |
| D. | none of these |
| Answer» D. none of these | |
| 891. |
Which noble gas is not present in air? |
| A. | organ |
| B. | helium |
| C. | radon |
| D. | neon |
| Answer» D. neon | |
| 892. |
Which of the following is used to fill balloons for meteorological observations? |
| A. | helium |
| B. | hydrogen |
| C. | nitrogen |
| D. | methane |
| Answer» B. hydrogen | |
| 893. |
What is the process of extracting calcium and magnesium from hard water called? |
| A. | water softening |
| B. | filtration |
| C. | sedimentation |
| D. | none of these |
| Answer» C. sedimentation | |
| 894. |
Which country is the largest contributor to the emission of greenhouse gases? |
| A. | No. Ra. America |
| B. | India |
| C. | China |
| D. | Japan |
| Answer» B. India | |
| 895. |
Which gas is used in electric bulb? |
| A. | hydrogen |
| B. | radon |
| C. | inert gas |
| D. | organ |
| Answer» D. organ | |
| 896. |
The most compound forming inert gas is? |
| A. | genon |
| B. | argon |
| C. | helium |
| D. | oxygen |
| Answer» B. argon | |
| 897. |
Where is the ozone layer mainly located? |
| A. | ionosphere |
| B. | troposphere |
| C. | stratosphere |
| D. | none of these |
| Answer» D. none of these | |
| 898. |
Who discovered helium? |
| A. | Shelley |
| B. | locker |
| C. | Henry Cavendish |
| D. | none of these |
| Answer» C. Henry Cavendish | |
| 899. |
Which of the following is a major green house gas? |
| A. | Carbon dioxide |
| B. | carbon monoxide |
| C. | Freon |
| D. | none of these |
| Answer» B. carbon monoxide | |
| 900. |
Which one of the following is also known as Stranger gas? |
| A. | argon |
| B. | helium |
| C. | neon |
| D. | genon |
| Answer» E. | |