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.
| 551. |
Substitution reaction is a property of which of the following? |
| A. | of alkene |
| B. | of paraffin |
| C. | of alkyne |
| D. | none of these |
| Answer» C. of alkyne | |
| 552. |
What is a blood pressure gauge? |
| A. | sphygnomanometer |
| B. | ammeter |
| C. | bolometer |
| D. | barometer |
| Answer» B. ammeter | |
| 553. |
By which instrument the density of milk is measured? |
| A. | barometer |
| B. | voltmeter |
| C. | hydrometer |
| D. | lactometer |
| Answer» E. | |
| 554. |
What is the total number of inner transition elements? |
| A. | 16 |
| B. | 28 |
| C. | 33 |
| D. | 32 |
| Answer» C. 33 | |
| 555. |
Sodium is usually placed under which of the following substances? |
| A. | alcohol |
| B. | kerosene (kerosene) |
| C. | ammonia |
| D. | water |
| Answer» C. ammonia | |
| 556. |
What is a lie detector? |
| A. | barometer |
| B. | polygraph |
| C. | Pyroma |
| D. | chymo graph |
| Answer» C. Pyroma | |
| 557. |
The by-product of the soap industry is? |
| A. | glycerol |
| B. | Caustic soda |
| C. | Caustic soda |
| D. | naphthalene |
| Answer» B. Caustic soda | |
| 558. |
This chemical is used in the carcass of organic matter? |
| A. | formaldehyde in methanol |
| B. | formaldehyde in water |
| C. | gaseous formaldehyde |
| D. | Ethylene glycol |
| Answer» C. gaseous formaldehyde | |
| 559. |
What is the process involved in making soap? |
| A. | hydrolysis |
| B. | polymerization |
| C. | Liquid |
| D. | Soaping |
| Answer» E. | |
| 560. |
Which gas is not a part of the atmosphere? |
| A. | chlorine |
| B. | nitrogen |
| C. | helium |
| D. | none of these |
| Answer» B. nitrogen | |
| 561. |
White phosphorus is kept under which of the following? |
| A. | cold water |
| B. | ammonia |
| C. | alcohol |
| D. | kerosene |
| Answer» B. ammonia | |
| 562. |
Who first explained the hydrogen spectrum? |
| A. | Erwin Schrödinger |
| B. | Dalton |
| C. | rutherford |
| D. | niels bore |
| Answer» E. | |
| 563. |
Dry powder fire extinguishers contain? |
| A. | sand and sodium bicarbonate |
| B. | sand |
| C. | sand and sodium carbonate |
| D. | sand and potassium carbonate |
| Answer» B. sand | |
| 564. |
What is the alcohol obtained in the saponification process? |
| A. | methyl alcohol |
| B. | ethyl alcohol |
| C. | glycerol |
| D. | wood spirit |
| Answer» D. wood spirit | |
| 565. |
How is burning soda? |
| A. | diaphoretic |
| B. | Utful |
| C. | reducing |
| D. | Oxidizer |
| Answer» B. Utful | |
| 566. |
Is formalin an aqueous solution? |
| A. | of fructose |
| B. | of ethanol |
| C. | of methanol |
| D. | of nitric acid |
| Answer» D. of nitric acid | |
| 567. |
Can aluminum be purified? |
| A. | by distillation |
| B. | by oxidation |
| C. | by ozone decomposition |
| D. | By electrolysis |
| Answer» E. | |
| 568. |
is carbon dioxide? |
| A. | dehydration |
| B. | Deputy Commissioner |
| C. | bleaching agent |
| D. | reducing |
| Answer» B. Deputy Commissioner | |
| 569. |
What is a disease spread by asbestos? |
| A. | paralysis |
| B. | emphysema |
| C. | dysentery |
| D. | Diarrhea |
| Answer» C. dysentery | |
| 570. |
The element which does not react with oxygen is |
| A. | Iodine |
| B. | chlorine |
| C. | nitrogen |
| D. | helium |
| Answer» E. | |
| 571. |
Apart from hydrogen, which element is found in abundance on the surface of the Sun? |
| A. | neon |
| B. | helium |
| C. | oxygen |
| D. | organ |
| Answer» C. oxygen | |
| 572. |
What is the main source of naphthalene? |
| A. | diesel |
| B. | coal tar |
| C. | camphor |
| D. | charcoal |
| Answer» C. camphor | |
| 573. |
The most abundant inert gas in the atmosphere is? |
| A. | organ |
| B. | helium |
| C. | krypton |
| D. | neon |
| Answer» B. helium | |
| 574. |
Denatured spirit is a mixture of ethanol? |
| A. | with kerosene |
| B. | with petrol |
| C. | with pyridine |
| D. | with water |
| Answer» D. with water | |
| 575. |
How much energy is contained in 'Sweetex' used by diabetic patients? |
| A. | ten calories |
| B. | five calories |
| C. | zero calories |
| D. | hundred calories |
| Answer» D. hundred calories | |
| 576. |
Who discovered the sex-hormone? |
| A. | Eugene Steinack |
| B. | dresser |
| C. | Samuel Cohen |
| D. | edward colwin |
| Answer» E. | |
| 577. |
Which of the following is included in the Technology Mission? |
| A. | pulses |
| B. | oilseeds |
| C. | vegetables |
| D. | corn |
| Answer» D. corn | |
| 578. |
What is the 'AIDS' virus? |
| A. | A-list d. N. A. |
| B. | A-list r. N. A. |
| C. | double list r. N. a. |
| D. | double list dn a. |
| Answer» C. double list r. N. a. | |
| 579. |
What is the medicine which reduces anxiety and gives peace? |
| A. | diuretics |
| B. | pacifier |
| C. | pain reliever |
| D. | none of these |
| Answer» C. pain reliever | |
| 580. |
What is the tear-gas used by the police to disperse the crowd? |
| A. | chlorine |
| B. | Carbon dioxide |
| C. | hydrogen sulfide |
| D. | ammonia |
| Answer» B. Carbon dioxide | |
| 581. |
What is the main component of biogas? |
| A. | oxygen |
| B. | methyl alcohol |
| C. | acetic acid |
| D. | methane |
| Answer» E. | |
| 582. |
Which of the following elements has the highest percentage in an ecosystem in nature? |
| A. | Carbon |
| B. | nitrogen |
| C. | hydrogen |
| D. | Phosphorus |
| Answer» C. hydrogen | |
| 583. |
Which of the following is a component of tear-gas? |
| A. | athene |
| B. | chloropicrin |
| C. | ether |
| D. | ethanol |
| Answer» C. ether | |
| 584. |
The commonly used material for making biogas is? |
| A. | animal waste |
| B. | crop residue |
| C. | aquatic plant |
| D. | forest remains |
| Answer» B. crop residue | |
| 585. |
Which of the following does not have a place in Science and Technology Enterprise (Enter-Pennoship) Parks? |
| A. | Testing u0026 Marking |
| B. | Training |
| C. | Fundraising for Enterprise Drivers |
| D. | technology development |
| Answer» D. technology development | |
| 586. |
Where is the National Institute of Excellence proposed to be established in the field of Information Engineering and Allied Sciences? |
| A. | Hyderabad |
| B. | Bangalore |
| C. | allahabad |
| D. | Pune |
| Answer» C. allahabad | |
| 587. |
What is mainly in gobar gas? |
| A. | carbon monoxide |
| B. | carbon dioxide |
| C. | methane |
| D. | hydrogen sulfide |
| Answer» D. hydrogen sulfide | |
| 588. |
What Happens in 'Bone Ash'? |
| A. | calcium sulfate |
| B. | phosphoric acid |
| C. | calcium hypo phosphate |
| D. | calcium phosphate |
| Answer» E. | |
| 589. |
What is the main component of air? |
| A. | Carbon dioxide |
| B. | nitrogen |
| C. | hydrogen |
| D. | oxygen |
| Answer» C. hydrogen | |
| 590. |
Which atmospheric gas is mainly responsible for the greenhouse effect? |
| A. | nitrogen |
| B. | ozone |
| C. | Carbon dioxide |
| D. | oxygen |
| Answer» D. oxygen | |
| 591. |
Which of the following is the main harmful gas released by automobile vehicles causing air pollution? |
| A. | Carbon dioxide |
| B. | carbon monoxide |
| C. | methane |
| D. | ozone gas |
| Answer» C. methane | |
| 592. |
Which of the following is not a 'Green House Gas'? |
| A. | methane |
| B. | chlorofluorocarbons |
| C. | nitrogen |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 593. |
What is an important source of Sea Weeds? |
| A. | chlorine |
| B. | iron |
| C. | Iodine |
| D. | bromine |
| Answer» D. bromine | |
| 594. |
It is not advisable to sleep under a tree at night, because then? |
| A. | carbon monoxide is released |
| B. | less oxygen is released |
| C. | more oxygen is released |
| D. | carbon dioxide is released |
| Answer» B. less oxygen is released | |
| 595. |
Which of the following gas is most toxic? |
| A. | chlorine |
| B. | Carbon dioxide |
| C. | carbon monoxide |
| D. | sulphur dioxide |
| Answer» D. sulphur dioxide | |
| 596. |
Zinc phosphide is commonly used for? |
| A. | as a deodorant |
| B. | as a fungicide |
| C. | as an herbicide |
| D. | as a pesticide |
| Answer» E. | |
| 597. |
Which metal does not react with oxygen even at high temperature? |
| A. | iron |
| B. | Gold |
| C. | potassium |
| D. | aluminum |
| Answer» C. potassium | |
| 598. |
Thin wires can be drawn from a piece of metal. For which property of the metal is it responsible? |
| A. | tensile |
| B. | hardness |
| C. | Trauma |
| D. | conductivity |
| Answer» B. hardness | |
| 599. |
Food is cooked in a metal utensil because it is the source of heat. |
| A. | is a good conductor |
| B. | is a semiconductor |
| C. | is a bad conductor |
| D. | is both a driver and a conductor |
| Answer» B. is a semiconductor | |
| 600. |
What is the main reason for the depletion of ozone layer? |
| A. | chlorofluorocarbons |
| B. | volcanic eruption |
| C. | Aviation fuel |
| D. | radioactive rays |
| Answer» B. volcanic eruption | |