MCQOPTIONS
Saved Bookmarks
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.
| 301. |
All noble gases are ? |
| A. | Colourless |
| B. | Odourless |
| C. | Colourless and odourless |
| D. | Colourless and but have odour |
| Answer» D. Colourless and but have odour | |
| 302. |
Due to rusting the weight of iron |
| A. | Increases |
| B. | Decreases |
| C. | Uncertain |
| D. | Remains the same |
| Answer» B. Decreases | |
| 303. |
The Chemical Symbol of Sodium is |
| A. | Na |
| B. | Sd |
| C. | So |
| D. | Br |
| Answer» D. Br | |
| 304. |
Faraday's Law is associated with |
| A. | Electrolysis |
| B. | Reaction of gases |
| C. | Pressure of gases |
| D. | Temperature and pressure |
| Answer» B. Reaction of gases | |
| 305. |
Contact lenses are made from ? |
| A. | Lucite |
| B. | Teflon |
| C. | Polystyrene |
| D. | Polyvinyl chloride |
| Answer» E. | |
| 306. |
Conduction band electrons have more mobility than holes because they are |
| A. | Have negative charge |
| B. | Need less energy to move them |
| C. | Experience collision less frequently |
| D. | Experience collision more frequently |
| Answer» D. Experience collision more frequently | |
| 307. |
A catalyst is a substance which |
| A. | Increases the activation energy |
| B. | Hastens the attainment of equilibrium |
| C. | Increases the rate of reaction and increases the equilibrium concentration of products |
| D. | Changes the equilibrium of a reaction so that the concentration of the product increases |
| Answer» C. Increases the rate of reaction and increases the equilibrium concentration of products | |
| 308. |
The cyclotron is used to |
| A. | Making alloys |
| B. | Purifying metals |
| C. | Separating elements |
| D. | Accelerating particles |
| Answer» E. | |
| 309. |
Elements that show the properties of both metals and non metals are called ? |
| A. | Alloys |
| B. | Colloids |
| C. | Allotropes |
| D. | Metalloids |
| Answer» E. | |
| 310. |
The molecules of which gas have highest speed? |
| A. | H2 at -73oc |
| B. | Ch4 at 300 k |
| C. | N2 at 1,027oc |
| D. | O2 at 0oc |
| Answer» B. Ch4 at 300 k | |
| 311. |
What is extracted from Bauxite ? |
| A. | Tin |
| B. | Mica |
| C. | Copper |
| D. | Aluminium |
| Answer» E. | |
| 312. |
Which of the following elements behave chemically both as a metal and a non metal? |
| A. | Boron |
| B. | Argon |
| C. | Carbon |
| D. | Mercury |
| Answer» B. Argon | |
| 313. |
Atomic number of an element gives |
| A. | The number of nucleons in its atom |
| B. | The number of electrons in its atom |
| C. | The weight of the atom of the element |
| D. | The total number of elementary particles in its atom |
| Answer» C. The weight of the atom of the element | |
| 314. |
The gas used for artificial ripening of green fruit is ? |
| A. | Ethane |
| B. | Ethylene |
| C. | Acetylene |
| D. | Carbon dioxide |
| Answer» C. Acetylene | |
| 315. |
Which one is an organic Acid ? |
| A. | Citric |
| B. | Nitric |
| C. | Sulphuric |
| D. | Phosphoric |
| Answer» B. Nitric | |
| 316. |
The most electropositive elements among the following is : |
| A. | Ca |
| B. | Cs |
| C. | Na |
| D. | Br |
| Answer» C. Na | |
| 317. |
What is the chemical name of table salt ? |
| A. | Sodium nitrate |
| B. | Calcium chloride |
| C. | Sodium chloride |
| D. | Ammonium chloride |
| Answer» D. Ammonium chloride | |
| 318. |
Which gas is used to manufacture vanaspati from vegetable oil is |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Nitrogen |
| D. | Carbon dioxide |
| Answer» C. Nitrogen | |
| 319. |
Petroleum is found in ? |
| A. | Igneous rock |
| B. | Marshy land |
| C. | Sedimentary rocks |
| D. | Metamorphic rocks |
| Answer» D. Metamorphic rocks | |
| 320. |
Alloys made with mercury as one metal are called ? |
| A. | Solders |
| B. | Mixtures |
| C. | Amalgams |
| D. | Emulsions |
| Answer» D. Emulsions | |
| 321. |
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is |
| A. | 2.05 gram |
| B. | 3.05 gram |
| C. | 4.05 gram |
| D. | 5.05 gram |
| Answer» C. 4.05 gram | |
| 322. |
The aqueous solution of which acids is called Vinegar ? |
| A. | Acetic acid |
| B. | Citric acid |
| C. | Oxalic acid |
| D. | Hydrochloric acid |
| Answer» B. Citric acid | |
| 323. |
Acids taste |
| A. | Sour |
| B. | Sweet |
| C. | May be both |
| D. | None of both |
| Answer» B. Sweet | |
| 324. |
What is used to avoid melting of ice ? |
| A. | Butane |
| B. | Gelatine |
| C. | Methane |
| D. | Any acid |
| Answer» C. Methane | |
| 325. |
What is metallurgy ? |
| A. | Process of making metals live long |
| B. | Process of creating alloys of metals |
| C. | Process of extracting metal in pure form from its ore |
| D. | None of above |
| Answer» D. None of above | |
| 326. |
How many different oxides are formed by nitrogen ? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 327. |
Which have maximum number of isotopes ? |
| A. | Carbon |
| B. | Bromine |
| C. | Polonium |
| D. | Aluminium |
| Answer» D. Aluminium | |
| 328. |
Acid rain is due to air pollution by ? |
| A. | Methane |
| B. | Carbon dioxide |
| C. | Carbon monoxide |
| D. | Nitrous oxide and sulphur dioxide |
| Answer» E. | |
| 329. |
What is the hardest form of carbon ? |
| A. | Coke |
| B. | Graphite |
| C. | Charcoal |
| D. | Diamond |
| Answer» E. | |
| 330. |
The single acid which dissolves gold is ? |
| A. | Nitric acid |
| B. | Aqua regia |
| C. | Selenic acid |
| D. | Hydrochloric acid |
| Answer» C. Selenic acid | |
| 331. |
Ozone - layer is getting depleted because of |
| A. | excessive use of automobiles |
| B. | excessive formation of industrial units |
| C. | excessive use of man-made compounds containing both fluorine and chlorine |
| D. | excessive deforestation. |
| Answer» D. excessive deforestation. | |
| 332. |
Which of the following is not a criterion for classification of living organisms? |
| A. | Body design of the organism |
| B. | Ability to produce one s own food |
| C. | Membrane bound nucleus and cell organelles |
| D. | Height of the plant |
| Answer» E. | |
| 333. |
What is Rusting of an article made up of iron called? |
| A. | corrosion and it is a physical as well as chemical change |
| B. | dissolution and it is a physical change |
| C. | corrosion and it is a chemical change |
| D. | dissolution and it is a chemical change |
| Answer» D. dissolution and it is a chemical change | |
| 334. |
Which among the following has specialised tissue for conduction of water? |
| A. | Thallophyta |
| B. | Bryophyta |
| C. | Pteridophyta |
| D. | Fungi |
| Answer» D. Fungi | |
| 335. |
Which among the following is not important for individual s health? |
| A. | Living in clean space |
| B. | Good economic condition |
| C. | Social equality and harmony |
| D. | Living in a large and well furnished house |
| Answer» E. | |
| 336. |
Which of the following is a bad conductor of electricity even though it is a metal? |
| A. | lead |
| B. | three |
| C. | Copper |
| D. | Nickel |
| Answer» B. three | |
| 337. |
Metallic luster is found in which of the following non-metals? |
| A. | Iodine |
| B. | graphite |
| C. | (A |
| D. | none of these |
| Answer» D. none of these | |
| 338. |
Oiled paper? |
| A. | interpretive |
| B. | Opaque |
| C. | Transparent |
| D. | none of these |
| Answer» C. Transparent | |
| 339. |
Elements which have properties of both metals and non-metals are called? |
| A. | Submetallic |
| B. | slag |
| C. | Alloy |
| D. | all these |
| Answer» B. slag | |
| 340. |
Rubber is a polymer of which of the following? |
| A. | isoprene |
| B. | propene |
| C. | ethylene |
| D. | acetylene |
| Answer» B. propene | |
| 341. |
What is a substance made up of the same type of atoms called? |
| A. | Compound |
| B. | mix |
| C. | fluid |
| D. | Element |
| Answer» E. | |
| 342. |
What is formed by mixing two or more pure substances in any ratio? |
| A. | fluid |
| B. | Solid |
| C. | mix |
| D. | gas |
| Answer» D. gas | |
| 343. |
A substance formed by combining two or more elements in a definite proportion with regard to their quantity is called? |
| A. | Compound |
| B. | mix |
| C. | fluid |
| D. | Element |
| Answer» B. mix | |
| 344. |
Name the hydrocarbon from which ethanol is made? |
| A. | methane |
| B. | butane |
| C. | ethane |
| D. | benzene |
| Answer» D. benzene | |
| 345. |
Which of the following is a good conductor of heat and electricity? |
| A. | Diamond |
| B. | charcoal |
| C. | graphite |
| D. | methane |
| Answer» D. methane | |
| 346. |
Which allotrope of carbon is used in making pencil? |
| A. | Coke |
| B. | isoprene |
| C. | graphite |
| D. | charcoal |
| Answer» D. charcoal | |
| 347. |
Does soap do the job of cleaning well? |
| A. | in hard water |
| B. | in soft water |
| C. | in both types of water |
| D. | all statements are true |
| Answer» C. in both types of water | |
| 348. |
Which of the following is commonly found in anti-perspirant substances? |
| A. | aluminum compound |
| B. | magnesium compound |
| C. | calcium compound |
| D. | iron compound |
| Answer» B. magnesium compound | |
| 349. |
What are diamonds and graphite carbon? |
| A. | amorphous |
| B. | isotopes |
| C. | polymer |
| D. | Isosceles |
| Answer» B. isotopes | |
| 350. |
Which of the following is used to join broken bones? |
| A. | white cement |
| B. | white lead |
| C. | zinc oxide |
| D. | plaster of Paris |
| Answer» E. | |