MCQOPTIONS
Saved Bookmarks
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 of the following statement(s) is/are correct regarding vegetative propagation of plants? 1. Vegetative propagation generates chlorine population. 2. Vegetative propagation is helpful in neutralizing viruses. 3. Vegetative promotion can run in the right part of the year? |
| A. | only 1 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | all these |
| Answer» E. | |
| 2. |
Consider the following techniques/phenomena 1. Emergence and planting in fruit plants 2. Cytoplasmic male sterility 3. Gene silence Which of the above is/are used in making transgenic crops? |
| A. | only 1 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | none of these |
| Answer» C. 1 and 3 | |
| 3. |
many household products; For example, in mattresses and furniture upholstery, bromine flame retardants are used. Is their use a cause for concern? 1. They have high resistance to degradation in the environment. 2. They can accumulate in humans and animals. |
| A. | only 1 |
| B. | only 2 |
| C. | 1 and 2 |
| D. | neither 1 nor 2 |
| Answer» D. neither 1 nor 2 | |
| 4. |
Acidification of oceans is increasing. Why is this incident a matter of concern? 1. Growth and survival of calcium phytoplankton will be adversely affected. 2. Growth and survival of coral reefs will be adversely affected. 3. The survival of some animals whose larvae are phytoplankton will be adversely affected. 4. Cloud seeding and cloud formation will be adversely affected. |
| A. | 1,2 and 3 |
| B. | only 3 |
| C. | 1 and 3 |
| D. | all these |
| Answer» E. | |
| 5. |
Due to the increasing amount of carbon dioxide in the air, the temperature of the atmosphere is gradually increasing, because carbon dioxide |
| A. | Absorbs water vapor present in air and stores its heat |
| B. | absorbs the ultraviolet part of solar radiation |
| C. | absorbs all solar radiation |
| D. | absorbs the infrared part of solar radiation |
| Answer» E. | |
| 6. |
Lead that enters the body through inhalation or food is injurious to health. What are the sources that cause lead poisoning now after the addition of lead in petrol was banned? 1. Smelting Units 2. Pens and Pencils 3. Paints 4. Hair Oils and Cosmetics |
| A. | 1,2 and 3 |
| B. | 1 and 3 |
| C. | 2 and 4 |
| D. | all these |
| Answer» E. | |
| 7. |
Consider the following statements: Chloro-fluorocarbons, which are popularly known as ozone-depleting substances, are used in the manufacture of 1. soluble foams. 2. Used in manufacturing of tubeless tyres. 3. Used in cleaning certain electronic components 4. Used as a pressing agent in aerosol cans. Which of the above statement(s) is/are correct? |
| A. | 1,2 and 3 |
| B. | only 4 |
| C. | 1,3 and 4 |
| D. | all these |
| Answer» D. all these | |
| 8. |
Chlorination is a process of purifying water. What is the main reason for the germicidal action of chlorine? |
| A. | Formation of hydrochloric acid when chlorine is added to water |
| B. | Formation of hydrochlorous acid when chlorine is added to water |
| C. | Formation of nascent oxygen when chlorine is added to water |
| D. | Hydrogen formation when chlorine is added to water |
| Answer» C. Formation of nascent oxygen when chlorine is added to water | |
| 9. |
What is Bisphenol A(BPA)? |
| A. | a cancer diagnostic test |
| B. | A test to test drugs known to improve performance by athletes |
| C. | chemical used for the development of food packaging materials |
| D. | a special type of alloy steel |
| Answer» D. a special type of alloy steel | |
| 10. |
Aluminum pages are usually anodized. it means to deposit on |
| A. | layer of chromium oxide |
| B. | layer of aluminum oxide |
| C. | layer of nickel oxide |
| D. | layer of zinc oxide |
| Answer» C. layer of nickel oxide | |
| 11. |
Consider the following statements about the periodic table of chemical elements 1. The ionization potential gradually decreases along a periodicity. 2. In a group of elements, as the atomic mass increases, the electron affinity decreases. 3. Electronegativity decreases as the atomic number increases in a given periodicity. Which of the above statement(s) is/are correct? |
| A. | only 1 |
| B. | only 2 |
| C. | 1 and 3 |
| D. | 2 and 3 |
| Answer» C. 1 and 3 | |
| 12. |
Which of the following materials is very hard and very ductile? |
| A. | carborundum |
| B. | tungsten |
| C. | cast iron |
| D. | nichrome |
| Answer» E. | |
| 13. |
Most explosions occur in mines |
| A. | by mixing hydrogen with oxygen |
| B. | by mixing oxygen with acetylene |
| C. | mixing of methane with air |
| D. | Combination of carbon dioxide with ethane |
| Answer» D. Combination of carbon dioxide with ethane | |
| 14. |
Small sacs filled with silica gel are often found in medicine bottles in the powdered form of tablets because silica gel - |
| A. | kills bacteria |
| B. | kills germs and spores |
| C. | absorbs moisture |
| D. | Absorbs all the gases present in the bottle |
| Answer» D. Absorbs all the gases present in the bottle | |
| 15. |
Consider the following statements: Hard water is not suitable 1. For drinking 2. For washing clothes with soap 3. For use of boilers 4. For irrigation of crops. Which of the above statements are correct? |
| A. | 1 and 3 |
| B. | 2 and 3 |
| C. | 1,2 and 4 |
| D. | all these |
| Answer» D. all these | |
| 16. |
Which one of the following is the correct order according to the increasing sequence of molecular weights of hydrocarbons? |
| A. | methane, ethane, propane and butane |
| B. | propane, butane, ethane and methane |
| C. | butane,ethane,propane and butane |
| D. | butane, propane, ethane and methane |
| Answer» B. propane, butane, ethane and methane | |
| 17. |
Which one of the following is not radioactive? |
| A. | astatine |
| B. | francium |
| C. | Tritium |
| D. | Larchnium |
| Answer» E. | |
| 18. |
The half-life of a radioactive material is four months. The time it will take for three-fourth of this substance to decay |
| A. | 3 months |
| B. | 4 month |
| C. | 8 months |
| D. | 12 months |
| Answer» D. 12 months | |
| 19. |
The order of filling of orbitals in an atom is controlled by |
| A. | By Afbao theory |
| B. | Heisenberg's uncertainty principle |
| C. | by Hund's rule |
| D. | By Pauli's theory of exclusion |
| Answer» B. Heisenberg's uncertainty principle | |
| 20. |
An aqueous solution of copper sulphate is acidic because of this salt |
| A. | dialysis takes place |
| B. | electrolysis takes place |
| C. | hydrolysis takes place |
| D. | light decomposition takes place |
| Answer» D. light decomposition takes place | |
| 21. |
Which one of the following is produced during the formation of photochemical smoke fog? |
| A. | hydrocarbons |
| B. | nitrogen tri-oxide |
| C. | ozone |
| D. | methane |
| Answer» D. methane | |
| 22. |
With respect to the molecule of a chemical element, the magnetic quantum number is related to |
| A. | by orientation |
| B. | by shape |
| C. | by size |
| D. | by rotation |
| Answer» B. by shape | |
| 23. |
The colors of fireworks are obtained by the salts of which of the following elements? |
| A. | zinc and sulfur |
| B. | potassium and mercury |
| C. | strontium and barium |
| D. | chromium and nickel |
| Answer» D. chromium and nickel | |
| 24. |
Consider the following statements : Sodium sulphate and sodium silicate are mixed in detergents in laundry powder so that 1. the powder remains dry 2. The alkalinity of the powder is maintained. Which of the above statement(s) is/are correct? |
| A. | only 1 |
| B. | only 2 |
| C. | 1 and 2 |
| D. | neither of the above |
| Answer» D. neither of the above | |
| 25. |
In normal 18 carat gold sold in the market |
| A. | 82 parts are of gold and 18 parts are of other metals. |
| B. | 18 parts are of gold and 82 parts are of other metals |
| C. | 18 parts are of gold and 6 parts of other metals |
| D. | 9 parts are of gold and 15 parts of other metals |
| Answer» D. 9 parts are of gold and 15 parts of other metals | |
| 26. |
With reference to ionic compounds, consider the following statements 1. Ionic statements are insoluble in alcohol. 2. Ionic compounds are good conductors of electricity in the solid state. Which of the above statement(s) is/are correct? |
| A. | only 1 |
| B. | only 2 |
| C. | 1 and 2 |
| D. | None of these |
| Answer» B. only 2 | |
| 27. |
Consider the following statements 1. In the process of osmosis the solvent moves from concentrated solution to dilute solution. 2. In inverse osmosis, external pressure is applied to the dilute solution. Which of the above statement(s) is/are correct? |
| A. | only 1 |
| B. | only 2 |
| C. | 1 and 2 |
| D. | neither 1 nor 2 |
| Answer» C. 1 and 2 | |
| 28. |
Consider the following statements 1. Anhydrous sodium carbonate is commonly known as baking soda. 2. Pak-soda (baking, soda) is used in fire extinguishers. 3. Bleaching powder is produced at Hessenclaver plant. Which of the above statement(s) is/are correct? |
| A. | 1,2 and 3 |
| B. | 2 and 3 |
| C. | only 3 |
| D. | 1 and 2 |
| Answer» D. 1 and 2 | |
| 29. |
Consider the following statements 1. Baking soda is used in fire extinguishers. 2. In the production of glass, slaked lime is used. 3. Gypsum is used in the production of Plaster of Paris. Which of the above statement(s) is/are correct? |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | only 1 |
| D. | All of the above |
| Answer» E. | |
| 30. |
Which is the correct sequence of the following substances in descending order of their density? |
| A. | Steelu003eMercuryu003egold |
| B. | Gold u003e Mercury u003e Steel |
| C. | Steelu003eGoldu003eMercury |
| D. | Goldu003esteelu003emercury |
| Answer» C. Steelu003eGoldu003eMercury | |
| 31. |
Consider the following statements 1. The constituent of tea and coffee is Caffeine is a diuretic. 2. Citric acid is used in soft drinks. 3. Ascobic acid is essential for the formation of bones and teeth. 4. Citric acid is a good substitute for ascorbic acid in our nutrition. Which of the above statements are correct? |
| A. | 1 and 2 |
| B. | 1,2 and 3 |
| C. | 3 and 4 |
| D. | all these |
| Answer» C. 3 and 4 | |
| 32. |
Consider the following chemicals 1. Benzene 2. Carbon tetrachloride 3. Sodium carbonate 4. Trichloroethylene Which of the above is/are used/used as dry cleaning chemicals? |
| A. | only 1 |
| B. | only 2 |
| C. | 1,2 and 4 |
| D. | all these |
| Answer» D. all these | |
| 33. |
Which materials are often used as solder in the soldering process in electronics? |
| A. | iron and tin |
| B. | lead and tin |
| C. | aluminum and lead |
| D. | aluminum and iron |
| Answer» C. aluminum and lead | |
| 34. |
Which one of the following is another name for RDX? |
| A. | cyanohydrin |
| B. | dextran |
| C. | cyclohexane |
| D. | Cyclonite |
| Answer» E. | |
| 35. |
Which one of the following is also known as 'Stranger gas'? |
| A. | argon |
| B. | neon |
| C. | genon |
| D. | nitrous oxide |
| Answer» D. nitrous oxide | |
| 36. |
The mixture of which of the following pairs of gases is responsible for most of the explosions in mines? |
| A. | hydrogen and oxygen |
| B. | Oxygen and Acetylene |
| C. | methane and air |
| D. | carbon dioxide and methane |
| Answer» D. carbon dioxide and methane | |
| 37. |
How are Ruby and Sapphire chemically known? |
| A. | silicon dioxide |
| B. | aluminum oxide |
| C. | lead tetroxide |
| D. | Boron nitride |
| Answer» C. lead tetroxide | |
| 38. |
Consider the following statements 1. Carbon dioxide 2. Oxides of nitrogen 3. Oxides of sulfur Which of the above is/are emitted by combustion of coal in thermal power plants? |
| A. | only 1 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 1,2 and 3 |
| Answer» E. | |
| 39. |
Consider the following 1. Oxides of Hydrogen 2. Oxides of Nitrogen 3. Oxides of Sulfur Which of the above is/are the cause of acid rain? |
| A. | 1 and 2 |
| B. | only 3 |
| C. | 2 and 3 |
| D. | 1,2 and 3 |
| Answer» D. 1,2 and 3 | |
| 40. |
Which one of the following element groups was basically responsible for the origin of life on earth? |
| A. | hydrogen, oxygen, sodium |
| B. | Carbon, Hydrogen, Nitrogen |
| C. | Oxygen, Calcium Phosphorus |
| D. | Carbon, Hydrogen, Potassium |
| Answer» C. Oxygen, Calcium Phosphorus | |
| 41. |
Which state has declared the house sparrow as the state bird? |
| A. | Haryana |
| B. | Punjab |
| C. | Delhi |
| D. | Rajasthan |
| Answer» D. Rajasthan | |
| 42. |
Who has won the Ladli Awaaz Award of the Century Award? |
| A. | Tulsi Kumar |
| B. | Sunidhi Chauhan |
| C. | Alka Yagnik |
| D. | Lata Mangeshkar |
| Answer» E. | |
| 43. |
What is theMission Indradhanushof the Central Government related to? |
| A. | pulse production |
| B. | To vaccinate children against seven vaccine preventable diseases |
| C. | Skill Development |
| D. | tourism promotion |
| Answer» C. Skill Development | |
| 44. |
Where was the first International Conference on Terrorism held? |
| A. | Bhopal |
| B. | Jaipur |
| C. | New Delhi |
| D. | Mumbai |
| Answer» C. New Delhi | |
| 45. |
Who has played an important role in the observance of World Sparrow Day? |
| A. | Salim Ali |
| B. | Vandana Shiva |
| C. | Sunita Narayan |
| D. | Mohammad Dilawar |
| Answer» E. | |
| 46. |
Famous personalitySahir Krishnarao Sablehas passed away, he was a famous? |
| A. | actor |
| B. | RTI activist |
| C. | Marathi folk artist |
| D. | photographer |
| Answer» D. photographer | |
| 47. |
Stockholm Water Prize 2015 winner Rajendra Singh is associated with which NGO? |
| A. | bondage |
| B. | Tarun Bharat Sangh |
| C. | save water |
| D. | drop |
| Answer» C. save water | |
| 48. |
Who has been made the brand ambassador for the central government's campaign against Hepatitis B? |
| A. | Farhan Akhtar |
| B. | Amitabh Bachchan |
| C. | Shahrukh Khan |
| D. | Aamir Khan |
| Answer» C. Shahrukh Khan | |
| 49. |
Who holds the world record for the most runs scored in the Cricket World Cup? |
| A. | Suresh Raina |
| B. | Martin Guptill |
| C. | Chris Gayle |
| D. | Virat Kohli |
| Answer» C. Chris Gayle | |
| 50. |
Who has won the prestigious Stockholm Water Prize 2015? |
| A. | Medha Patkar |
| B. | Vandana Shiva |
| C. | Sunita Narayan |
| D. | Rajendra Singh |
| Answer» E. | |