MCQOPTIONS
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MCQOPTIONS
This section includes 1184 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
The IUPAC name of HCONH2 is___________? |
| A. | Methanamide |
| B. | Methanoylamine |
| C. | Aminoethanol |
| D. | Formanide |
| Answer» B. Methanoylamine | |
| 502. |
The irritation caused by red ants bite is due to____________________? |
| A. | Lactic acid |
| B. | Formic acid |
| C. | Uric acid |
| D. | Acetic acid |
| Answer» C. Uric acid | |
| 503. |
The ionization energy__________________? |
| A. | Generally increases from left to right in a period |
| B. | Does not change in a period |
| C. | Increase from top to bottom in a group |
| D. | Does not change in a group |
| Answer» B. Does not change in a period | |
| 504. |
The introduction of Kelvin scale in thermodynamic is according to_______________? |
| A. | Boyles law |
| B. | Charles law |
| C. | Daltons law |
| D. | Grahams law |
| Answer» C. Daltons law | |
| 505. |
The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ? |
| A. | alkaline aquenous iodine |
| B. | aqueous bromine |
| C. | Fehling solution |
| D. | aqueous NaOH |
| Answer» B. aqueous bromine | |
| 506. |
The important function of burning zone in the rotary kilm is __________________? |
| A. | to dry the moisture of slurry |
| B. | to decompose lime stone to unslaked lime |
| C. | combination of different oxides like CaO SiO2 Fe2O3 and Al2O3 |
| D. | to reduce the impurities |
| Answer» D. to reduce the impurities | |
| 507. |
The important monomers of acryclic resins is__________________? |
| A. | Vinyl chloride |
| B. | Styrene |
| C. | Methylmethacrylate |
| D. | Hexamethylenediamine |
| Answer» D. Hexamethylenediamine | |
| 508. |
The hydrogenation of phenol in the presence of Ni and heat gives_________________? |
| A. | cyclohexane |
| B. | n – hexane |
| C. | 1 – hexanol |
| D. | cyclohexanol |
| Answer» E. | |
| 509. |
The hydrolysis of Benzenetrizonide will yield three moles of____________________? |
| A. | Glyoxime |
| B. | Benzaldehyde |
| C. | Glycol |
| D. | Glyoxal |
| Answer» E. | |
| 510. |
The hybridization of nitrogen atom in pyridine is_______? |
| A. | Sp |
| B. | Sp2 |
| C. | Sp3 |
| D. | It is not hybridized |
| Answer» C. Sp3 | |
| 511. |
The highest temperature at which a substance can exist as a liquid is called its______________? |
| A. | Critical temperature |
| B. | Standard temperature |
| C. | Absolute temperature |
| D. | Upper consulate temperature |
| Answer» B. Standard temperature | |
| 512. |
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 | |
| 513. |
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 | |
| 514. |
The hardest of the following solids is__________________? |
| A. | sodium |
| B. | diamond |
| C. | graphite |
| D. | magnesium |
| Answer» C. graphite | |
| 515. |
The halogen which reacts very slowly with halogen is________________? |
| A. | Fluorine |
| B. | Chlorine |
| C. | Bromine |
| D. | Iodine |
| Answer» E. | |
| 516. |
The halogen which reacts spontaneously with gold (Au) to form Au+3 is ________________? |
| A. | F2 |
| B. | Cl2 |
| C. | Br2 |
| D. | I2 |
| Answer» C. Br2 | |
| 517. |
The halogen having highest electron affinity is_____________________? |
| A. | Fluorine |
| B. | Chlorine |
| C. | Bromine |
| D. | Iodine |
| Answer» C. Bromine | |
| 518. |
The half cells are interconnected through________________? |
| A. | wire |
| B. | salt bridge |
| C. | electric circuit |
| D. | no connection exists |
| Answer» C. electric circuit | |
| 519. |
The given dissociation constant (Ka) value 1.3×10-10 is of_________________? |
| A. | Alcohol |
| B. | Acetic acid |
| C. | Water |
| D. | Phenol |
| Answer» E. | |
| 520. |
The geometry of ammonia is___________________? |
| A. | Tetrahedral |
| B. | Square planner |
| C. | Trigonal bipyramidal |
| D. | Trigonal Pyramidal |
| Answer» E. | |
| 521. |
The general formula of cycloalkene is __________________? |
| A. | CnH2n |
| B. | CnH2n+2 |
| C. | CnH2n-1 |
| D. | CnH2n-2 |
| Answer» E. | |
| 522. |
The gases become non-ideal at ________________? |
| A. | High temperature and high pressure |
| B. | Low temperature and low pressure |
| C. | High temperature and low pressure |
| D. | Low temperature and high pressure |
| Answer» E. | |
| 523. |
The gas which cannot be dried by conc. H2SO4 ? |
| A. | SO2 |
| B. | H2S |
| C. | CO2 |
| D. | C2H4 |
| Answer» C. CO2 | |
| 524. |
The gas used in manufacturing of urea fertilizer__________________? |
| A. | C2H6 |
| B. | C2H4 |
| C. | C2H2 |
| D. | CH4 |
| Answer» E. | |
| 525. |
the fractional distillation of petroleum produces gasoline up to ________________? |
| A. | 10% |
| B. | 15% |
| C. | 20% |
| D. | 30% |
| Answer» D. 30% | |
| 526. |
The formula of palmitic acid_________________? |
| A. | C15H31COOH |
| B. | C13H27COOH |
| C. | C17H33COOH |
| D. | C17H35COOH |
| Answer» B. C13H27COOH | |
| 527. |
The formula of starch is__________________? |
| A. | C12H22O11 |
| B. | C6H10O5 |
| C. | (C6H10O5)n |
| D. | C6H12O6 |
| Answer» D. C6H12O6 | |
| 528. |
The formula C6H5-CO-CH3 represents_______ ? |
| A. | Acetone |
| B. | Acetic acid |
| C. | Acetophenone |
| D. | Phenyl acetate |
| Answer» D. Phenyl acetate | |
| 529. |
The first organic compound was synthesized in laboratory by_________________? |
| A. | Wohler |
| B. | Kolbe |
| C. | Berzilius |
| D. | Berthelot |
| Answer» B. Kolbe | |
| 530. |
The fertilizers which provide single nutrient from NPK are called ___________ fertilizer? |
| A. | straight |
| B. | compound |
| C. | both a and b |
| D. | none of the above |
| Answer» B. compound | |
| 531. |
The fertility of the soil is improved by________________? |
| A. | Rotation of the crops |
| B. | Adding lime to the acid salts |
| C. | Adding manure and growing legumes |
| D. | All |
| Answer» E. | |
| 532. |
The ether used in Wurtz synthesis is__________________? |
| A. | acidic |
| B. | basic |
| C. | aqueous |
| D. | dry |
| Answer» E. | |
| 533. |
The environment in which a system is studied is __________________? |
| A. | State function |
| B. | phase |
| C. | surrounding |
| D. | state |
| Answer» D. state | |
| 534. |
The energy of one mole of photons of radiation, whose frequency is 4×10 14 Hz, is ___________? |
| A. | 159.6kJ |
| B. | 135.5 KJ |
| C. | 110.5 KJ |
| D. | 80.4 KJ |
| Answer» B. 135.5 KJ | |
| 535. |
The element that act as anode always have ______________ position in electrochemical cell? |
| A. | higher |
| B. | lower |
| C. | in middle |
| D. | no effect of position |
| Answer» B. lower | |
| 536. |
The element having electronic configuration [kr] 4d10, 4f14,5s2,5p6,5d1,6s2 belongs to __________? |
| A. | S-Block |
| B. | P-Block |
| C. | d-Block |
| D. | f-Block |
| Answer» E. | |
| 537. |
The element of group VIA which is a non-metal is________________? |
| A. | S |
| B. | Se |
| C. | Te |
| D. | Po |
| Answer» B. Se | |
| 538. |
The element cesium bears resemblance with________________? |
| A. | Ca |
| B. | Cr |
| C. | Both of the above |
| D. | None of the above |
| Answer» E. | |
| 539. |
The easy way of balancing the chemical equation is_________? |
| A. | according to atom’s atomic number. |
| B. | According to atom’s atomic mass. |
| C. | First we balance Metal than non-metal than Hydrogen than Oxygen. |
| D. | None of the above |
| Answer» D. None of the above | |
| 540. |
The distinction test for primary secondary and tertiary alcohol required to react each of them is_________________? |
| A. | Cone. HCI and anhydrous SOCl2 |
| B. | Cone. HCI and anhydrous CaCl2 |
| C. | Cone. HCI and anhydrous PCl2 |
| D. | Cone. HCI and anhydrous ZnCl2 |
| Answer» E. | |
| 541. |
The discovery of neutron became very late because _______ ? |
| A. | It does not carry any charge |
| B. | It does not move |
| C. | It is a fundamental particle |
| D. | It is present in nucleus |
| Answer» B. It does not move | |
| 542. |
The diffusion of gases at absolute zero will be________________? |
| A. | Unchanged |
| B. | Slightly decreased |
| C. | Slightly increased |
| D. | Zero |
| Answer» E. | |
| 543. |
The determination of correct molecular weight from Raoults law is applicable to_________________? |
| A. | a volatile solute in dilute solution |
| B. | a non-electrolyte & non volatile solute in concentrated solution |
| C. | a non-electrolyte & non volatile solute in concentrated solute |
| D. | non volatile solute in a dilute solution |
| Answer» E. | |
| 544. |
The density of water may be__________________? |
| A. | Equal to that of ice |
| B. | Greater than that of ice |
| C. | Less than that of ice |
| D. | All are possible |
| Answer» C. Less than that of ice | |
| 545. |
The density of a gas is 1.964 g dm-3 at 273 K and 76 cm Hg. The gas is _________? |
| A. | CH4 |
| B. | CO2 |
| C. | C2H4 |
| D. | Xe |
| Answer» C. C2H4 | |
| 546. |
The deliquescence is a property in which a solid____________________? |
| A. | Absorbs moisture and remains solid |
| B. | Absorbs moisture and turns to liquid form |
| C. | Loses water of crystallization |
| D. | Increases the number of water of crystallization |
| Answer» C. Loses water of crystallization | |
| 547. |
The degree of dissociation of week electrolyte increases as________________? |
| A. | Pressure increases |
| B. | Dilution decreases |
| C. | Dilution increases |
| D. | None |
| Answer» D. None | |
| 548. |
The criteria for aromaticity is presence of_________? |
| A. | Unsaturations |
| B. | Cyclic structure |
| C. | Presence of 4nπ electrons |
| D. | Presence of 4n+2π electrons |
| Answer» E. | |
| 549. |
The correct electronic configuration of Cu is ___________________? |
| A. | [Ar]4s1 |
| B. | [Ar]4s2 |
| C. | [Ar]3d104s1 |
| D. | [Ar]3d94s2 |
| Answer» D. [Ar]3d94s2 | |
| 550. |
The correct electronic configuration of Cr is____________________? |
| A. | [Ar]4s23d4 |
| B. | [Ar] 4s23d4 |
| C. | [Ar]4s03d5 |
| D. | [Ar]4s13d5 |
| Answer» E. | |