MCQOPTIONS
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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 2401. |
The metal that is usually extracted from sea water is? |
| A. | Ca |
| B. | Na |
| C. | K |
| D. | Mg |
| Answer» E. | |
| 2402. |
Simplify 4+32=? |
| A. | 11 |
| B. | 12 |
| C. | 13 |
| D. | 15 |
| Answer» D. 15 | |
| 2403. |
The ames of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of_____. |
| A. | Atomic structure |
| B. | Metallurgy |
| C. | Periodic table of contents |
| D. | Discovery of elements |
| Answer» D. Discovery of elements | |
| 2404. |
The formula C6H5-CO-CH3 represents? |
| A. | Acetone |
| B. | Acetic acid |
| C. | Acetophenone |
| D. | Phenyl acetate |
| Answer» D. Phenyl acetate | |
| 2405. |
The maximum number of covalent formed by nitrogen is? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 2406. |
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be? |
| A. | 2 : 16 : 2 |
| B. | 2 : 16 : 1 |
| C. | 1 : 16 : 2 |
| D. | 1 : 1 : 1 |
| Answer» D. 1 : 1 : 1 | |
| 2407. |
The National Chemical Laboratory is situated in? |
| A. | New Delhi |
| B. | Bangalore |
| C. | Pune |
| D. | Patna |
| Answer» D. Patna | |
| 2408. |
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is 3 are? |
| A. | 4 |
| B. | 5 |
| C. | 2 |
| D. | 0 |
| Answer» B. 5 | |
| 2409. |
The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in? |
| A. | 1.8 gram of H2O |
| B. | 12 moles of KMnO4 |
| C. | 0.6N H2SO4 |
| D. | 4.6 gram of C2H5OH |
| Answer» C. 0.6N H2SO4 | |
| 2410. |
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is? |
| A. | chain isomerism |
| B. | functional group isomerism |
| C. | positional isomerism |
| D. | metamerism |
| Answer» D. metamerism | |
| 2411. |
The number of electrons presents in H is? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 2412. |
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is? |
| A. | Carbon |
| B. | Hydrogen |
| C. | Oxygen |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 2413. |
The hottest part of the gas flame is known as? |
| A. | Luminous zone |
| B. | Dark zone |
| C. | Blue zone |
| D. | Non-luminous zone |
| Answer» E. | |
| 2414. |
The organic reaction represented by equation CH3 - CH = O H2NOH gives CH3 - CH - NH H2O is an example of |
| A. | An addition reaction |
| B. | A condensation reaction |
| C. | An oxidation reaction |
| D. | An elimination reaction |
| Answer» C. An oxidation reaction | |
| 2415. |
The hardest form of carbon is? |
| A. | Coke |
| B. | Graphite |
| C. | Diamond |
| D. | Charcoal |
| Answer» D. Charcoal | |
| 2416. |
The most extensive, commercially useful source of thorium as monazite sand occurs in India at? |
| A. | Orissa coast |
| B. | Travancore coast |
| C. | West Bengal coast |
| D. | Gujarat coast |
| Answer» C. West Bengal coast | |
| 2417. |
The maximum number of isomers for an alkene with molecular formula C4H8 is? |
| A. | 5 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 2418. |
The main active constituent of tea and coffee is? |
| A. | Nicotine |
| B. | Chlorophyll |
| C. | caffeine |
| D. | Aspirin |
| Answer» D. Aspirin | |
| 2419. |
The metal does not give H2 on treatment with dilute HCL is? |
| A. | Zn |
| B. | Fe |
| C. | Ag |
| D. | Ca |
| Answer» D. Ca | |
| 2420. |
The main chemical constituent of clay is? |
| A. | silicon oxide |
| B. | aluminium borosilicate |
| C. | zeolites |
| D. | aluminium silicate |
| Answer» E. | |
| 2421. |
The mineral containing both magnesium and calcium is? |
| A. | Magnesite |
| B. | Calcite |
| C. | Carnallite |
| D. | Dolomite |
| Answer» E. | |
| 2422. |
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is? |
| A. | cineole |
| B. | engenol |
| C. | geraniol |
| D. | limonene |
| Answer» B. engenol | |
| 2423. |
The high reactivity of fluorine is due to? |
| A. | Its high electro negativity |
| B. | Small size of fluorine atom |
| C. | Availability of d-orbitals |
| D. | Strong F - F bond |
| Answer» B. Small size of fluorine atom | |
| 2424. |
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is? |
| A. | 5x/36 |
| B. | 5x |
| C. | 7.2 x |
| D. | x/6 |
| Answer» B. 5x | |
| 2425. |
The molecule which has the highest percentage of ionic character among the following is? |
| A. | HI |
| B. | HF |
| C. | HCI |
| D. | HBr |
| Answer» C. HCI | |
| 2426. |
The major constituent of air is? |
| A. | Nitrogen |
| B. | Carbon dioxide |
| C. | Oxygen |
| D. | Hydrogen |
| Answer» B. Carbon dioxide | |
| 2427. |
The method that cannot be used for removing permanent hardness of water is? |
| A. | adding sodium carbonate |
| B. | distillation |
| C. | adding caustic soda |
| D. | boiling |
| Answer» E. | |
| 2428. |
The gas used for artificial ripening of green fruit is? |
| A. | Ethylene |
| B. | Ethane |
| C. | Carbon dioxide |
| D. | Acetylene |
| Answer» B. Ethane | |
| 2429. |
The graphite rods in the nuclear reactor_____. |
| A. | react with U to release energy |
| B. | produce neutrons |
| C. | undergo combustion which triggers the nuclear fission |
| D. | convert fast moving neutrons into thermal neutrons |
| Answer» E. | |
| 2430. |
The most electropositive elements among the following is? |
| A. | Na |
| B. | Ca |
| C. | K |
| D. | Cs |
| Answer» E. | |
| 2431. |
The gas used in the manufacture of vanaspati from vegetable oil is? |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Carbon dioxide |
| Answer» B. Oxygen | |
| 2432. |
The oil used in the froth floatation process is? |
| A. | Coconut oil |
| B. | Olive oil |
| C. | Kerosene oil |
| D. | Pine oil |
| Answer» E. | |
| 2433. |
The mass of one Avogadro number of helium atom is? |
| A. | 1.00 gram |
| B. | 4.00 gram |
| C. | 8.00 gram |
| D. | 4 x 6.02 x 1023 gram |
| Answer» C. 8.00 gram | |
| 2434. |
The mass number of a nucleus is? |
| A. | Always less than its atomic number |
| B. | The sum of the number of protons and neutrons present in the nucleus |
| C. | Always more than the atomic weight |
| D. | A fraction |
| Answer» C. Always more than the atomic weight | |
| 2435. |
The material which can be deformed permanently by heat and pressure is called a__. |
| A. | thermoplastic |
| B. | thermoset |
| C. | chemical compound |
| D. | polymer |
| Answer» C. chemical compound | |
| 2436. |
The items amenable to detection by soft x-rays are? |
| A. | Contrabands |
| B. | Lead in bullets |
| C. | Narcotics |
| D. | Genuine coins from counterfeit coins |
| Answer» E. | |
| 2437. |
The main use of salt in the diet is to? |
| A. | Make the taste of food better |
| B. | Produce in small amounts the hydrochloric acid required for the digestion of food |
| C. | Ease the process of cooking |
| D. | Increase the solubility of food particles in water |
| Answer» C. Ease the process of cooking | |
| 2438. |
The luster of a metal is due to? |
| A. | Its high density |
| B. | Its high polishing |
| C. | Its chemical inertness |
| D. | Presence of free electrons |
| Answer» E. | |
| 2439. |
The most abundant rare gas in the atmosphere is? |
| A. | He |
| B. | Ne |
| C. | Ar |
| D. | Xe |
| Answer» D. Xe | |
| 2440. |
The heat energy produced when the human body metabolises 1 gram of fat is? |
| A. | 30 KJ |
| B. | 1 KJ |
| C. | 39 KJ |
| D. | 29 KJ |
| Answer» D. 29 KJ | |
| 2441. |
The metal that is used as a catalyst in the hydrogenation of oils is? |
| A. | Ni |
| B. | Pb |
| C. | Cu |
| D. | Pt |
| Answer» B. Pb | |
| 2442. |
The Latin word formica means ant. The name formic acid is derived from this Latin word because____. |
| A. | this acid, in ancient times, was used to eliminate ant-hills |
| B. | B. this corrosive acid is secreted by ants to drive away their enemies |
| C. | this acid was first obtained by the distillation of ants |
| D. | ants are attracted by the odour of this acid |
| Answer» D. ants are attracted by the odour of this acid | |
| 2443. |
The inherited traits of an organism are controlled by? |
| A. | RNA molecules |
| B. | Nucleotides |
| C. | DNA molecules |
| D. | Enzymes |
| Answer» D. Enzymes | |
| 2444. |
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 | |
| 2445. |
The nucleus of a hydrogen atom consists of? |
| A. | 1 proton only |
| B. | 1 proton + 2 neutron |
| C. | 1 neutron only |
| D. | 1 electron only |
| Answer» B. 1 proton + 2 neutron | |
| 2446. |
The heat required to raise the temperature of body by 1 K is called? |
| A. | Specific heat |
| B. | Thermal capacity |
| C. | Water equivalent |
| D. | None of the above |
| Answer» C. Water equivalent | |
| 2447. |
The octane number of zero is assigned to? |
| A. | 2-methyl octane |
| B. | n-heptane |
| C. | iso-octane |
| D. | 3-methyl octane |
| Answer» C. iso-octane | |
| 2448. |
The nuclear particles which are assumed to hold the nucleons together are? |
| A. | Electrons |
| B. | Positrons |
| C. | Neutrons |
| D. | Mesons |
| Answer» E. | |
| 2449. |
The most commonly used bleaching agent is? |
| A. | Alcohol |
| B. | carbon dioxide |
| C. | Chlorine |
| D. | sodium chlorine |
| Answer» D. sodium chlorine | |
| 2450. |
The oldest rocks in the earth's crust were once molten, and came from deep insidethe earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called? |
| A. | Granite |
| B. | Basalt |
| C. | igneous rocks |
| D. | Sedimentary rocks |
| Answer» D. Sedimentary rocks | |