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MCQOPTIONS
This section includes 64577 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1551. |
Monomers of ethene in thousand numbers react together in addition polymerization to produce |
| A. | polyamides |
| B. | poly(ethene) |
| C. | all of them |
| D. | polyesters |
| Answer» C. all of them | |
| 1552. |
The color of transition metal compounds is due to ligands action of splitting of |
| A. | d orbital |
| B. | s orbital |
| C. | all of them |
| D. | p orbital |
| Answer» B. s orbital | |
| 1553. |
The maximum number of hydrogen atoms are present in molecules of alkanes hence they are |
| A. | unsaturated hydrocarbons |
| B. | saturated hydrocarbons |
| C. | none |
| D. | super saturated hydrocarbons |
| Answer» C. none | |
| 1554. |
If a feather and an iron bar is released from a same height in a room without any air resistance. Which will fall first? |
| A. | Feather |
| B. | Iron bar |
| C. | They won |
| D. | Both at the same time |
| Answer» E. | |
| 1555. |
Ceramics with silicon (II) oxide is used for |
| A. | abrasives |
| B. | furnace linings |
| C. | all of them |
| D. | glass and porcelain |
| Answer» D. glass and porcelain | |
| 1556. |
The Halogens |
| A. | are oxidizing agents |
| B. | loose one electron while reacting with metal atoms |
| C. | are least volatile of all other elements |
| D. | are reducing agents |
| Answer» B. loose one electron while reacting with metal atoms | |
| 1557. |
Collision theory states that particles must collide with each other in correct orientation and sufficient energy to |
| A. | repel |
| B. | attract |
| C. | respond |
| D. | react |
| Answer» E. | |
| 1558. |
When a single atom provides both electrons which are needed for completion of covalent bond lead to |
| A. | covalent bond |
| B. | ionic bond |
| C. | none |
| D. | co-ordinate bind |
| Answer» E. | |
| 1559. |
During electrolysis the mass of a substance produced is proportional to |
| A. | strength of current |
| B. | time of constant current |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1560. |
Under certain conditions ethene molecule reacts to give |
| A. | polymer |
| B. | isomer |
| C. | none |
| D. | both a and b |
| Answer» B. isomer | |
| 1561. |
Ceramics can be molded into other variety of shapes at very higher temperature without affecting its |
| A. | effectiveness |
| B. | strength |
| C. | none |
| D. | both a and b |
| Answer» D. both a and b | |
| 1562. |
Fizzy drinks contain dissolved |
| A. | carbon dioxide |
| B. | oxygen |
| C. | water |
| D. | nitrogen |
| Answer» B. oxygen | |
| 1563. |
The alternative mechanism by which particles react possesses a lower |
| A. | chemical energy |
| B. | activation energy |
| C. | reaction |
| D. | speed |
| Answer» C. reaction | |
| 1564. |
The pull or push or movement of electrical charges is termed as |
| A. | Electrical force |
| B. | Magnetic force |
| C. | Viscous force |
| D. | Tension |
| Answer» B. Magnetic force | |
| 1565. |
If the temperature of a reaction will be increased, the average kinetic energy will be |
| A. | decreased |
| B. | increased |
| C. | equal |
| D. | constant |
| Answer» C. equal | |
| 1566. |
Metal atoms |
| A. | become positively charged |
| B. | loose their outer electrons |
| C. | None of Above |
| D. | both of these |
| Answer» E. | |
| 1567. |
If particles have enough energy to react and change themselves into product particles make possible |
| A. | successful collision |
| B. | effective collision |
| C. | unsuccessful collision |
| D. | both a and b |
| Answer» E. | |
| 1568. |
Metals and non-metals combine to give the electronic configuration of |
| A. | noble gases |
| B. | alkalis |
| C. | acids |
| D. | metalloids |
| Answer» B. alkalis | |
| 1569. |
Of the given series of actions, which action is performed first? |
| A. | the enzyme-substrate complex is binded |
| B. | the substrate diffuses to the active site |
| C. | the products diffuse away from the active site |
| D. | amino acids may acts as nucleophiles |
| Answer» C. the products diffuse away from the active site | |
| 1570. |
The quantity of electricity is expressed in unit called |
| A. | mol |
| B. | Faraday |
| C. | watts |
| D. | gram |
| Answer» C. watts | |
| 1571. |
In a molecule of chlorine trifluoride, ClF3 the bond angle is |
| A. | 107.5° |
| B. | 87.5° |
| C. | 107.5° |
| D. | 78.5° |
| Answer» C. 107.5° | |
| 1572. |
The country is more developed if it is utilizing more chemical |
| A. | nitric acid |
| B. | sulfuric acid |
| C. | acetic acid |
| D. | benzoic acid |
| Answer» C. acetic acid | |
| 1573. |
The cathode production the electrolysis of zinc iodide is |
| A. | zinc |
| B. | iodine |
| C. | all of them |
| D. | zinc oxide |
| Answer» B. iodine | |
| 1574. |
The volatility of the Halogens indicates the |
| A. | the ease with which they evaporate |
| B. | difficulty with which they react |
| C. | All of Above |
| D. | the density of the Halogens |
| Answer» B. difficulty with which they react | |
| 1575. |
Bonding pairs of electrons in SF |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» E. | |
| 1576. |
The enthalpy changes of combustion are |
| A. | exothermic |
| B. | endothermic |
| C. | none |
| D. | both a and b |
| Answer» B. endothermic | |
| 1577. |
Hexanediol dichloride,CLOC(CH2)4COCL is more |
| A. | expensive |
| B. | reactive |
| C. | stable |
| D. | both a and b |
| Answer» E. | |
| 1578. |
In non-metal half cells electricity is conducted via solution by |
| A. | platinum foil |
| B. | platinum wire |
| C. | aluminum foil |
| D. | both a and b |
| Answer» E. | |
| 1579. |
Electrical conductivity of calcium is much higher than any |
| A. | noble gas |
| B. | transition element |
| C. | acids |
| D. | alkali |
| Answer» C. acids | |
| 1580. |
Halide ions ability to act as reducing agent increases |
| A. | across the period |
| B. | down the group |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1581. |
The melting point of wax is equal to 57 °C, which is equal to |
| A. | −330 K |
| B. | 330 K |
| C. | −216 K |
| D. | 216 K |
| Answer» C. −216 K | |
| 1582. |
Valuable metals are attached to anode are termed as |
| A. | sludge |
| B. | ore |
| C. | none |
| D. | cryolite |
| Answer» B. ore | |
| 1583. |
The solid is turned to liquid because |
| A. | the particles collide with each other |
| B. | after the intermolecular bonds are broken down the particles are now free to move |
| C. | the particles start vibrating more vigorously |
| D. | kinetic energy increases the rate of thermal energy |
| Answer» C. the particles start vibrating more vigorously | |
| 1584. |
If a car is accelerating at a rate of 20 ms |
| A. | 500 kg |
| B. | 200 kg |
| C. | 9980 kg |
| D. | 200000 kg |
| Answer» B. 200 kg | |
| 1585. |
In extreme weather conditions oxygen reacts with nitrogen to form |
| A. | nitrogen (IV) oxide |
| B. | nitrogen (II) oxide |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1586. |
The amount of thermal energy required to raise the temperature of 1 kg of substance by 1 K (1 °C) is termed as |
| A. | Specific Heat Capacity |
| B. | Heat capacity |
| C. | Specific Latent Heat |
| D. | Latent Heat |
| Answer» B. Heat capacity | |
| 1587. |
d' block element forms one or more stable ions d-sub shell which is |
| A. | incomplete |
| B. | complete |
| C. | whole |
| D. | partially complete |
| Answer» B. complete | |
| 1588. |
The SI unit of moment of force is |
| A. | N m |
| B. | N m |
| C. | |
| D. | W, where W is watts |
| E. | J, where J is joules |
| Answer» B. N m | |
| 1589. |
For chemical facial peel in clinics the acid used is called |
| A. | trichloroethanoic acid |
| B. | ethanoic acid |
| C. | none |
| D. | di chloric acid |
| Answer» B. ethanoic acid | |
| 1590. |
The oxidation number of sulpher trioxide is |
| A. | +4 |
| B. | +2 |
| C. | +8 |
| D. | +6 |
| Answer» E. | |
| 1591. |
As the size of the ion in Group IV elements increases, |
| A. | the melting point increases |
| B. | the bond energy increases |
| C. | All of Above |
| D. | the strength of metallic bond decreases |
| Answer» E. | |
| 1592. |
Group VII elements are |
| A. | transition metals |
| B. | alkaline earth metals |
| C. | metalloids |
| D. | coinage |
| Answer» B. alkaline earth metals | |
| 1593. |
Higher positive oxidation numbers shows that the atom is |
| A. | more oxidized |
| B. | less oxidized |
| C. | none |
| D. | reduced |
| Answer» B. less oxidized | |
| 1594. |
Negative acceleration is termed as |
| A. | retardation |
| B. | ceasing |
| C. | opposite velocity |
| D. | inertia |
| Answer» B. ceasing | |
| 1595. |
Alkaline iodine solution is used to test |
| A. | ethanol |
| B. | methyl ketone |
| C. | all of them |
| D. | secondary alcohols |
| Answer» D. secondary alcohols | |
| 1596. |
The force of attraction between nucleus and electrons increases across periods because |
| A. | distance remains constant |
| B. | nuclear charge increases |
| C. | All of Above |
| D. | shielding effect constant |
| Answer» D. shielding effect constant | |
| 1597. |
All matters are made up of |
| A. | molecules |
| B. | atoms |
| C. | atoms and molecules |
| D. | atoms and ions |
| Answer» D. atoms and ions | |
| 1598. |
Reaction of amines with Acyl chlorides will give off organic product as |
| A. | substituted amide |
| B. | substituted amide |
| C. | none |
| D. | both a and b |
| Answer» B. substituted amide | |
| 1599. |
The boiling point of hydrogen is |
| A. | −253 °C |
| B. | −353 °C |
| C. | −53 °C |
| D. | −153 °C |
| Answer» B. −353 °C | |
| 1600. |
When sodium is heated and added to chlorine gas jar it forms |
| A. | sodium bicarbonate |
| B. | sodium chloride |
| C. | water |
| D. | sodium sulfide |
| Answer» C. water | |