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MCQOPTIONS
This section includes 2539 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1351. |
Oxygen and Sulphur are kept in the same group, the reason is- |
| A. | No. of electrons in the outermost shell |
| B. | Their atomiticity |
| C. | Their physical state |
| D. | Structure of their molecules |
| Answer» B. Their atomiticity | |
| 1352. |
Match the branches of chemistry given in Column 1 with their main areas of specialized study and research given in Column 2 and select the correct answer using the options given below the columns:Column 1Column 2 1. Biochemistry a. physical principles of chemical processes 2. Material Chemistry b. detection and determination of chemicals and compounds 3. Physical Chemistry c. chemical processes in living organisms 4. Analytical Chemistry d. solid state chemistry and polymer chemistry |
| A. | 1 - d, 2 - b, 3 - a, 4 - c |
| B. | 1 - b, 2 - a, 3 - c, 4 - d |
| C. | 1 - a, 2 - c, 3 - d, 4 - b |
| D. | 1 - c, 2 - d, 3 - a, 4 - b |
| Answer» E. | |
| 1353. |
______ has very low melting point. |
| A. | Ba |
| B. | Na |
| C. | Ga |
| D. | K |
| Answer» D. K | |
| 1354. |
Number of 3°-carbons in 2-methyl propane is |
| A. | 3 |
| B. | Zero |
| C. | 2 |
| D. | 1 |
| Answer» E. | |
| 1355. |
In the preparation of Oxygen by way of decomposition of Potassium Chlorate which chemical compound acts as a catalyst? |
| A. | Potassium Permanganate |
| B. | Manganese dioxide |
| C. | Potassium Chloride |
| D. | Manganese Oxide |
| Answer» C. Potassium Chloride | |
| 1356. |
If a crystal of potassium permanganate is kept in a beaker containing water, the water becomes pink after some time. What characteristic of matter is inferred through this observation? |
| A. | Particles of solids break easily when pressure is applied on them. |
| B. | Particles of matter have space in between them. |
| C. | Particles of solids are tightly bound and they are rigid. |
| D. | Particles of liquid are loosely bound and they can flow. |
| Answer» C. Particles of solids are tightly bound and they are rigid. | |
| 1357. |
___________ is commonly used in electrical heating devices. |
| A. | Copper |
| B. | Nichrome |
| C. | Iron |
| D. | Aluminium |
| Answer» C. Iron | |
| 1358. |
Iron objects are protected from corrosion by connecting them to small pieces of Magnesium, where: |
| A. | Tron is the sacrificial anode |
| B. | Magnesium is the sacrificial cathode |
| C. | Magnesium is the sacrificial anode |
| D. | Tron is the sacrificial cathode |
| Answer» D. Tron is the sacrificial cathode | |
| 1359. |
Going from fluorine to chlorine, to bromine and then to iodine, the electronegatively: |
| A. | Increases |
| B. | First decreases then increases |
| C. | Remains constant |
| D. | Decreases |
| Answer» E. | |
| 1360. |
In universal indicators, a pH of 4 to 5 indicates- |
| A. | Strong alkalis |
| B. | Weak acids |
| C. | Weak alkalis |
| D. | Strong acids |
| Answer» C. Weak alkalis | |
| 1361. |
In which one of the following folds is the axial plane found to be virtually horizontal? |
| A. | Isoclinal |
| B. | Anticlinal |
| C. | Recumbent |
| D. | Monoclinal |
| Answer» D. Monoclinal | |
| 1362. |
Diamond is made of the same single element as? |
| A. | Chloroform |
| B. | Common salt |
| C. | Sugar |
| D. | Graphite |
| Answer» E. | |
| 1363. |
Peroxyacetyl nitrate (PAN), an eye irritant is produced by |
| A. | Organic waste |
| B. | Acid rain |
| C. | Classical smog |
| D. | Photochemical smog |
| Answer» E. | |
| 1364. |
A mixture of cement, gravel, coarse and water is called _______. |
| A. | Mortar |
| B. | Concrete |
| C. | Slurry |
| D. | Moderator |
| Answer» C. Slurry | |
| 1365. |
A solution of which of the following is needed to test the presence of proteins? |
| A. | Copper sulphate and caustic soda solution |
| B. | Iodine and caustic soda solution |
| C. | Copper sulphate and iodine solution |
| D. | Iodine solution |
| Answer» B. Iodine and caustic soda solution | |
| 1366. |
A solution containing 62 ethylene glycol in 250 g water is cooled to -10℃. If Kf for water is 1.86 K kg mol-1, the amount of water (in g) separated as ice is: |
| A. | 48 |
| B. | 32 |
| C. | 64 |
| D. | 16 |
| Answer» D. 16 | |
| 1367. |
In which one of the following equilibria, Kp ≠ Kc? |
| A. | 2C (s) + O2 (g) ⇌ 2CO (g) |
| B. | 2HI (g) ⇌ H2 (g) + I2 (g) |
| C. | NO (g) + SO2 (g) ⇌ NO (g) + SO3 (g) |
| D. | 2NO (g) ⇌ N2 (g) + O2 (g) |
| Answer» B. 2HI (g) ⇌ H2 (g) + I2 (g) | |
| 1368. |
Liquefied petroleum gas consists of: |
| A. | Hexane and benzene |
| B. | Nitrogen and ethane |
| C. | Propane and butane |
| D. | Nonane and octane |
| Answer» D. Nonane and octane | |
| 1369. |
IUPAC name of the following compound is |
| A. | 1-ethoxy-2-nitrocyclohexane |
| B. | 2-ethoxy-1-nitrocyclohexanee |
| C. | 1-ethoxy-2-nitrocyclohexanee |
| D. | 2-ethoxy-1-nitrocyclohexane |
| Answer» B. 2-ethoxy-1-nitrocyclohexanee | |
| 1370. |
Blue vitriol is chemically: |
| A. | Sodium sulphate |
| B. | Nickel Sulphate |
| C. | Copper Sulphate |
| D. | Iron Sulphate |
| E. | None of the above / More than one above |
| Answer» D. Iron Sulphate | |
| 1371. |
________ is a purple-coloured solid halogen. |
| A. | Bromine |
| B. | Fluorine |
| C. | Chlorine |
| D. | Iodine |
| Answer» E. | |
| 1372. |
5 ml. of 0.4 N NaOH is mixed with 20 ml. of 0.1 N HCl. the pH of the resulting solution will be |
| A. | 12 |
| B. | 10 |
| C. | 7 |
| D. | 5 |
| Answer» D. 5 | |
| 1373. |
If solubility product of Zr3(PO4)4 is denoted by Ksp and its molar solubility is denoted by S, then which of the following relation between S and Ksp is correct? |
| A. | \({\rm{S}} = {\left( {\frac{{{{\rm{K}}_{{\rm{sp}}}}}}{{144}}} \right)^{1/6}}\) |
| B. | \({\rm{S}} = {\left( {\frac{{{{\rm{K}}_{{\rm{sp}}}}}}{{6912}}} \right)^{1/7}}\) |
| C. | \({\rm{S}} = {\left( {\frac{{{{\rm{K}}_{{\rm{sp}}}}}}{{929}}} \right)^{1/9}}\) |
| D. | \({\rm{S}} = {\left( {\frac{{{{\rm{K}}_{{\rm{sp}}}}}}{{216}}} \right)^{1/7}}\) |
| Answer» C. \({\rm{S}} = {\left( {\frac{{{{\rm{K}}_{{\rm{sp}}}}}}{{929}}} \right)^{1/9}}\) | |
| 1374. |
In which of the following, functional group isomerism in not possible? |
| A. | Alcohols |
| B. | Aldehydes |
| C. | Alkyl halides |
| D. | Cyanides |
| Answer» D. Cyanides | |
| 1375. |
_____ has the greatest electron affinity. |
| A. | Br |
| B. | Cl |
| C. | I |
| D. | F |
| Answer» C. I | |
| 1376. |
Frenkel defect is also known as ________. |
| A. | Schottky Defect |
| B. | Interstitial Defects |
| C. | Hematological defects |
| D. | Dislocation Defects |
| Answer» E. | |
| 1377. |
Each letter of which letter-trio is a symbol of an element ? |
| A. | A, B, C |
| B. | O, P, Q |
| C. | F, G, H |
| D. | U, V, W |
| Answer» E. | |
| 1378. |
In Mendeleev’s periodic table, the vertical columns are called ________. |
| A. | Periods |
| B. | Classes |
| C. | Units |
| D. | Groups |
| Answer» E. | |
| 1379. |
Molar mass of acetic acid in benzene is 118 instead of 60 due to: |
| A. | dissociation of molecules |
| B. | association of molecules |
| C. | free movement of molecules |
| D. | solvation of molecules |
| Answer» C. free movement of molecules | |
| 1380. |
In Newlands law of Octaves, _____, Which resembles cobalt and nickel in properties, has been placed far away form these elements. |
| A. | Mn |
| B. | Al |
| C. | Fe |
| D. | Mg |
| Answer» D. Mg | |
| 1381. |
Lipids are formed when glycerol combines with- |
| A. | Disaccharide |
| B. | Fatty acids |
| C. | Peptide |
| D. | Oligosaccharide |
| Answer» C. Peptide | |
| 1382. |
Ozone gas is continuously formed by the action of which type of waves on molecular oxygen? |
| A. | Infrared radiation |
| B. | Gamma rays |
| C. | Radio waves |
| D. | Ultraviolet rays |
| Answer» E. | |
| 1383. |
In the reaction of oxalate with permanganate in acidic medium, the number of electron involved in producing one molecule of CO2 is: |
| A. | 2 |
| B. | 5 |
| C. | 1 |
| D. | 10 |
| Answer» D. 10 | |
| 1384. |
Alkalis turn universal indicators- |
| A. | Green |
| B. | Blue |
| C. | Yellow |
| D. | Red |
| Answer» C. Yellow | |
| 1385. |
Arrange the following substances in their order of increasing hardness:GypsumTopazFluoriteFeldsparSelect the correct answer using the code given below: |
| A. | 4-3-2-1 |
| B. | 1-3-4-2 |
| C. | 3-4-2-1 |
| D. | 1-4-3-2 |
| Answer» C. 3-4-2-1 | |
| 1386. |
R3N : act as: |
| A. | electrophile |
| B. | nucleophile |
| C. | free radical |
| D. | carbanion |
| Answer» C. free radical | |
| 1387. |
A solution in which water acts as the solvent is: |
| A. | Solid |
| B. | Liquid |
| C. | Aqueous |
| D. | Non-aqueous |
| Answer» D. Non-aqueous | |
| 1388. |
Identify a heterogeneous mixture out of the following |
| A. | Blood plasma |
| B. | Milk |
| C. | Brass |
| D. | Soil |
| Answer» E. | |
| 1389. |
Choose the least paramagnetic material- |
| A. | Fe |
| B. | Ni |
| C. | Cu |
| D. | Mn |
| Answer» D. Mn | |
| 1390. |
In blast furnace, iron oxide is reduced by ________. |
| A. | silica |
| B. | carbon |
| C. | carbon monoxide |
| D. | limestone |
| Answer» D. limestone | |
| 1391. |
_________ is used commercially in the preparation of jellies, jams and marmalades because of its ability to form a thick gel like solution. |
| A. | Glucose |
| B. | Lactose |
| C. | Pectin |
| D. | Maltose |
| Answer» D. Maltose | |
| 1392. |
Arrange the following amines in the decreasing order of basicity: |
| A. | I > II > III |
| B. | III > II > I |
| C. | I > III > II |
| D. | III > I > II |
| Answer» E. | |
| 1393. |
If the pH value of a substance is lower than 7, it would be considered as ________. |
| A. | Neutral |
| B. | Alkaline |
| C. | Acid |
| D. | lon |
| Answer» D. lon | |
| 1394. |
______ is the process in which acids, bases react to form salts and water. |
| A. | Hydrolysis |
| B. | Electrolysis |
| C. | Neutralisation |
| D. | Distillation |
| Answer» D. Distillation | |
| 1395. |
Iron boils at about ________ degree Celsius. |
| A. | 3861 |
| B. | 2861 |
| C. | 2181 |
| D. | 3182 |
| Answer» C. 2181 | |
| 1396. |
Elements on the right side of the Periodic Table are _____ |
| A. | Metals |
| B. | Transition Metals |
| C. | Semi Metals |
| D. | Non Metals |
| Answer» E. | |
| 1397. |
Dry Ice is the solid form of: |
| A. | Methane |
| B. | Carbon Dioxide |
| C. | Oxygen |
| D. | Ozone |
| Answer» C. Oxygen | |
| 1398. |
Precursor of which one of the following vitamins comes from β-carotene? |
| A. | Vitamin A |
| B. | Vitamin C |
| C. | Vitamin D |
| D. | Vitamin K |
| Answer» B. Vitamin C | |
| 1399. |
Methanol and Acetone can be separated by: |
| A. | Fractional Distillation |
| B. | Distillation |
| C. | Steam distillation |
| D. | Vacuum distillation |
| Answer» B. Distillation | |
| 1400. |
Diamond is an allotrope of: |
| A. | Boron |
| B. | Carbon |
| C. | Silicon |
| D. | Arsenic |
| Answer» C. Silicon | |