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.
| 701. |
Is it soluble in water? |
| A. | ethyl alcohol |
| B. | chloroform |
| C. | Carbon dioxide |
| D. | carbon tetrachloride |
| Answer» B. chloroform | |
| 702. |
Is alcohol present? |
| A. | ethyl alcohol |
| B. | Carbon dioxide |
| C. | carbon monoxide |
| D. | chloroform |
| Answer» B. Carbon dioxide | |
| 703. |
What type of toothpaste should be used to clean the mouth so that tooth decay can be prevented? |
| A. | Acidic toothpaste |
| B. | Alkaline toothpaste |
| C. | Indifferent toothpaste |
| D. | All |
| Answer» C. Indifferent toothpaste | |
| 704. |
Which of the following is a heterogeneous compound? |
| A. | plaster of Paris |
| B. | the chalk |
| C. | marble |
| D. | Limestone |
| Answer» B. the chalk | |
| 705. |
The pH value of lemon juice is approximately? |
| A. | 10 is |
| B. | is 2.2 |
| C. | is 12 |
| D. | is 14 |
| Answer» C. is 12 | |
| 706. |
Which substance is beneficial for treatment of bee sting? |
| A. | Baking soda |
| B. | sodium carbonate |
| C. | Sodium chloride |
| D. | other |
| Answer» B. sodium carbonate | |
| 707. |
Compared to zinc and lead, copper? |
| A. | is less active |
| B. | is more active |
| C. | is equally active |
| D. | other |
| Answer» C. is equally active | |
| 708. |
Whose number is the same in isometric? |
| A. | neutron |
| B. | nucleon |
| C. | proton |
| D. | electron |
| Answer» C. proton | |
| 709. |
Which acid is found in vinegar? |
| A. | lactic acid |
| B. | citric acid |
| C. | methanoic acid |
| D. | acetic acid |
| Answer» E. | |
| 710. |
The gas used in cooking is mainly? |
| A. | ethane |
| B. | methane |
| C. | butane |
| D. | propane |
| Answer» C. butane | |
| 711. |
What type of flame is emitted when a magnesium ribbon is burnt? |
| A. | red and shiny |
| B. | blue shiny |
| C. | white shiny |
| D. | green shiny |
| Answer» D. green shiny | |
| 712. |
fermenting grapes a? |
| A. | chemical change is |
| B. | physical change is |
| C. | is both a chemical and physical change |
| D. | other |
| Answer» B. physical change is | |
| 713. |
Inventor of Meson? |
| A. | chadwick |
| B. | thomson |
| C. | Yukawa |
| D. | none of these |
| Answer» D. none of these | |
| 714. |
What is determined by radio carbon dating? |
| A. | human age human |
| B. | purity of metals |
| C. | age of fossil |
| D. | disease of the body |
| Answer» D. disease of the body | |
| 715. |
The atomic number of carbon is 6 and the atomic mass is 12. How many protons are there in its nucleus? |
| A. | 12 |
| B. | 18 |
| C. | 6 |
| D. | 2 |
| Answer» D. 2 | |
| 716. |
An atom of an element has 2 protons, 2 neutrons and 2 electrons, then what will be the mass number of that element? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 717. |
Which one has the highest penetrating power from the radiations from the nucleus? |
| A. | of gamma rays |
| B. | of beta rays |
| C. | of alpha rays |
| D. | none of these |
| Answer» B. of beta rays | |
| 718. |
What is the maximum number of electrons that an atom of an element can have in its second orbit? |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | none of these |
| Answer» B. 16 | |
| 719. |
Carbon dioxide gas reacts with water to form? |
| A. | carbonic acid |
| B. | carbamic acid |
| C. | sulfurous acid |
| D. | carbolic acid |
| Answer» B. carbamic acid | |
| 720. |
Who is the discoverer of neutrino? |
| A. | Paulie |
| B. | anderson |
| C. | goldstein |
| D. | Yukawa |
| Answer» B. anderson | |
| 721. |
It is harmful to sleep under a tree at night, because the tree leaves? |
| A. | Carbon dioxide |
| B. | oxygen |
| C. | carbon monoxide |
| D. | carbon tetrachloride |
| Answer» B. oxygen | |
| 722. |
The main method by which CO2 gas is reduced in the atmosphere is |
| A. | trigger |
| B. | electrolysis |
| C. | Photosynthesis |
| D. | Collection |
| Answer» D. Collection | |
| 723. |
The gas used in soda water is? |
| A. | CO2 |
| B. | SO2 |
| C. | oxygen |
| D. | ammonia |
| Answer» B. SO2 | |
| 724. |
Which of the following gas is used by plants in photosynthesis? |
| A. | chlorine |
| B. | ammonia |
| C. | Carbon dioxide |
| D. | none of these |
| Answer» D. none of these | |
| 725. |
The carcinogenic gas in motor car fumes is? |
| A. | carbon monoxide |
| B. | hydrocarbons |
| C. | Carbon dioxide |
| D. | none of these |
| Answer» B. hydrocarbons | |
| 726. |
Which gas burns with blue flame? |
| A. | hydrogen |
| B. | nitrogen |
| C. | carbon monoxide |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 727. |
The polluted gas emitted from vehicles is mainly? |
| A. | hydrocarbons |
| B. | Carbon dioxide |
| C. | carbon monoxide |
| D. | Nitrogen oxide |
| Answer» D. Nitrogen oxide | |
| 728. |
Which of the following gas pollutes the air the most? |
| A. | sulphur dioxide |
| B. | Carbon dioxide |
| C. | Nitrogen oxide |
| D. | carbon monoxide |
| Answer» E. | |
| 729. |
Most of the coal mined in the world is? |
| A. | lignite |
| B. | Anthracite |
| C. | Pete |
| D. | bituminous |
| Answer» E. | |
| 730. |
What are the side effects of consuming ethyl alcohol in excess? |
| A. | on the kidney |
| B. | on the gut |
| C. | on the heart |
| D. | on the lever |
| Answer» E. | |
| 731. |
Used for food processing? |
| A. | acetic acid |
| B. | formic acid |
| C. | sulfuric acid |
| D. | benzoic acid |
| Answer» E. | |
| 732. |
In what form is rubber in its natural form? |
| A. | glue |
| B. | lacquer |
| C. | latex |
| D. | resins |
| Answer» D. resins | |
| 733. |
Which was the first artificial fiber made by man? |
| A. | nylon |
| B. | terricott |
| C. | polyester |
| D. | Rayon |
| Answer» E. | |
| 734. |
What is used to preserve fruit juice? |
| A. | acetic acid |
| B. | benzoic acid |
| C. | sulfuric acid |
| D. | formic acid |
| Answer» C. sulfuric acid | |
| 735. |
Is natural rubber a polymer? |
| A. | of acetylene |
| B. | of chloride |
| C. | of isoprene |
| D. | Of ethylene |
| Answer» D. Of ethylene | |
| 736. |
What is the percentage of nitrogen in urea? |
| A. | 26 % |
| B. | 36 % |
| C. | 46 % |
| D. | 60 % |
| Answer» D. 60 % | |
| 737. |
lol, one? |
| A. | natural polymer |
| B. | natural allotropes |
| C. | synthetic polymer |
| D. | none of these |
| Answer» B. natural allotropes | |
| 738. |
Which of the following organic compound was first prepared in the laboratory? |
| A. | ethane |
| B. | urea |
| C. | Ethylene |
| D. | methane |
| Answer» C. Ethylene | |
| 739. |
Which refrigerant is commonly used in home fridge? |
| A. | neon |
| B. | Freon |
| C. | nitrogen |
| D. | oxygen |
| Answer» C. nitrogen | |
| 740. |
What is raincoat made from? |
| A. | Polyethylene |
| B. | poly chloroethene |
| C. | polycarbonates |
| D. | poly styrene |
| Answer» D. poly styrene | |
| 741. |
What is the name of the gas used for artificial ripening of raw fruits? |
| A. | acetylene |
| B. | Ethylene |
| C. | carbon monoxide |
| D. | ammonia |
| Answer» B. Ethylene | |
| 742. |
Which plastic is used to pack food items? |
| A. | polyvinyl chloride |
| B. | Polyethylene |
| C. | poly propylene |
| D. | none of these |
| Answer» C. poly propylene | |
| 743. |
Which of the following organic compound is used to remove the production stain from iron compound? |
| A. | benzoic acid |
| B. | thalic acid |
| C. | oxalic acid |
| D. | cinnamic acid |
| Answer» D. cinnamic acid | |
| 744. |
Which gas comes out of marshy land? |
| A. | ethane |
| B. | butane |
| C. | methane |
| D. | propane |
| Answer» B. butane | |
| 745. |
What is the wax obtained from petroleum? |
| A. | paraffin wax |
| B. | Bee wax |
| C. | jojoba wax |
| D. | carnob wax |
| Answer» B. Bee wax | |
| 746. |
Dung gas is mainly found in? |
| A. | chlorine |
| B. | methane |
| C. | Ethylene |
| D. | hydrogen |
| Answer» C. Ethylene | |
| 747. |
The poisonous gas leucite used in war is made from? |
| A. | from chlorine |
| B. | from acetylene |
| C. | from ammonium |
| D. | from nitrobenzene |
| Answer» C. from ammonium | |
| 748. |
What is formed by pouring water on calcium carbide? |
| A. | methane |
| B. | ethane |
| C. | acetylene |
| D. | Ethylene |
| Answer» D. Ethylene | |
| 749. |
What is the main component of bio gas? |
| A. | ethane |
| B. | propane |
| C. | butane |
| D. | methane |
| Answer» E. | |
| 750. |
What is the main composition of petrol? |
| A. | Pentane |
| B. | hexane |
| C. | methane |
| D. | octane |
| Answer» E. | |