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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.
| 2501. |
Alkenes can be oxidized by help of powerful oxidizing agent, acidified |
| A. | sodium mangnate |
| B. | potassium mangnate |
| C. | all of them |
| D. | calcium mangnate |
| Answer» C. all of them | |
| 2502. |
The general formula for alkanes is |
| A. | CnH2n+2 |
| B. | CnH2n |
| C. | CH2n |
| D. | CnH |
| Answer» C. CH2n | |
| 2503. |
The poor conductors of heat and electricity are termed as |
| A. | Insulators |
| B. | Electrolytes |
| C. | Producers |
| D. | Consumers |
| Answer» B. Electrolytes | |
| 2504. |
A primary amine is made from ammonia molecule with its H atom replaced by |
| A. | aryl group |
| B. | alkyl group |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2505. |
The number of amino acids which are not made by our own body and we get from our food is |
| A. | forty |
| B. | twenty |
| C. | eight |
| D. | twelve |
| Answer» D. twelve | |
| 2506. |
The enthalpy change when the amount of reactants give products under standard conditions is called standard enthalpy change of |
| A. | formation |
| B. | reaction |
| C. | neutralization |
| D. | combustion |
| Answer» C. neutralization | |
| 2507. |
The pH of NaOH produced after Na(s) and H |
| A. | below 7 |
| B. | exactly zero |
| C. | exactly 14 |
| D. | above 7 |
| Answer» D. above 7 | |
| 2508. |
The actual numbers of every type of molecule which is present in a compound is represented by |
| A. | empirical formula |
| B. | molecular formula |
| C. | skeletal formula |
| D. | structural formula |
| Answer» C. skeletal formula | |
| 2509. |
Most of the watches and wall clocks have precision of |
| A. | Hours |
| B. | Minutes |
| C. | Microseconds |
| D. | Seconds |
| Answer» C. Microseconds | |
| 2510. |
C7H16 uses the stem name as |
| A. | hepta- |
| B. | hexa- |
| C. | non- |
| D. | dec- |
| Answer» B. hexa- | |
| 2511. |
Boiling point becomes higher due to |
| A. | increase in number of electrons |
| B. | increase in the van der Walls' forces |
| C. | both of these |
| D. | None of Above |
| Answer» D. None of Above | |
| 2512. |
Ammonia gas is produced by heating ammonium salt with |
| A. | base |
| B. | acid |
| C. | water |
| D. | alcohol |
| Answer» B. acid | |
| 2513. |
Individual chemicals involved in the sequences of reactions are called |
| A. | metabolites |
| B. | metabolism |
| C. | enzymes |
| D. | catalysts |
| Answer» B. metabolism | |
| 2514. |
The remaining amount of copper ores on earth is less than |
| A. | 0.13 |
| B. | 0.12 |
| C. | 0.01 |
| D. | 0.02 |
| Answer» D. 0.02 | |
| 2515. |
An iron wire resists 850 Ω at ice point and 860 Ω at steam point, and the resistance of wire is 853 Ω the room temperature would be |
| A. | 20 °C |
| B. | 10 °C |
| C. | 40 °C |
| D. | 30 °C |
| Answer» E. | |
| 2516. |
Consider the equation: Mg(s) + H |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» C. 4 | |
| 2517. |
During elimination reaction of Halogenoalkanes the reagent use is |
| A. | ethanoic acid |
| B. | ethanolic sodium hydroxide |
| C. | ethane |
| D. | ethanoate |
| Answer» C. ethane | |
| 2518. |
Collision theory helps to explain effects of |
| A. | temperature |
| B. | concentration |
| C. | All of Above |
| D. | surface area |
| Answer» D. surface area | |
| 2519. |
When there is a low concentration of solute in a solution it is known as |
| A. | saturated solution |
| B. | diluted solution |
| C. | none |
| D. | concentrated solution |
| Answer» C. none | |
| 2520. |
The reducing agent used for reduction of aldehydes and ketone is |
| A. | tetrahydridoborate |
| B. | tetrafluorate |
| C. | none |
| D. | tetrafluroborate |
| Answer» B. tetrafluorate | |
| 2521. |
A hydrocarbon which is composed of only one carbon and hydrogen is called |
| A. | propane |
| B. | Diane |
| C. | none |
| D. | methane |
| Answer» B. Diane | |
| 2522. |
Even a small amount of impurities can affect the conductivity of |
| A. | copper |
| B. | iron |
| C. | calcium |
| D. | ammonia |
| Answer» B. iron | |
| 2523. |
If a halogen is heated with ammonia dissolved in ethanol it ill form an |
| A. | amine |
| B. | ammonia |
| C. | all of them |
| D. | ammonium |
| Answer» B. ammonia | |
| 2524. |
Moving wind and waves, flying bird and spinning bowling ball use |
| A. | Mechanical Energy |
| B. | Potential Energy |
| C. | Thermal Energy |
| D. | Kinetic Energy |
| Answer» E. | |
| 2525. |
The SI unit of Power is |
| A. | newton-meter |
| B. | joule⁄second |
| C. | None of the above |
| D. | watt |
| Answer» E. | |
| 2526. |
Which one of these thermometers is best suited for measuring rapidly changing temperatures? |
| A. | Resistance thermometer |
| B. | Constant-volume gas thermometer |
| C. | Mercury-in-glass thermometer |
| D. | Thermocouple |
| Answer» E. | |
| 2527. |
Which one of the following statements related to center of gravity is incorrect? |
| A. | The center of gravity is sometimes confused with the center of mass. |
| B. | The center of gravity of an object is defined as the point through which its whole weight appears to |
| C. | For an object placed in a uniform gravitational field, the center of gravity coincides with the cent |
| D. | The center of gravity always lies inside the object. |
| Answer» E. | |
| 2528. |
The heat that is emitted by all hot objects is termed as |
| A. | Convectional heat |
| B. | Conductional heat |
| C. | Conductional and convectional heat both |
| D. | Radiant heat |
| Answer» E. | |
| 2529. |
When the movement of water molecules in liquid becomes equal to the molecules in vapor form, a state is called |
| A. | constant |
| B. | equilibrium |
| C. | All of Above |
| D. | ideal |
| Answer» C. All of Above | |
| 2530. |
In order to attain the electronic configuration of noble gas, Nitrogen needs |
| A. | 2 electrons |
| B. | 1 electron |
| C. | more than 3 electrons |
| D. | 3 electrons |
| Answer» E. | |
| 2531. |
In a balanced equation the number of electrons gain and loss must be |
| A. | high |
| B. | equal |
| C. | equilibrium |
| D. | low |
| Answer» C. equilibrium | |
| 2532. |
The loss of oxygen from an element is simple |
| A. | reduction |
| B. | oxidation |
| C. | hydrolysis |
| D. | Redox |
| Answer» B. oxidation | |
| 2533. |
Electrons always reside in certain energy level outside |
| A. | axis |
| B. | nucleus |
| C. | lobe |
| D. | zone |
| Answer» C. lobe | |
| 2534. |
The nuclear charge increases in periodic table |
| A. | down group |
| B. | across periods |
| C. | s-block |
| D. | d-block |
| Answer» C. s-block | |
| 2535. |
The boiling point of liquid hydrogen is equal to -253 °C, which is equal to |
| A. | −526 K |
| B. | 526 K |
| C. | 20 K |
| D. | −20 K |
| Answer» D. −20 K | |
| 2536. |
The reaction between ethanol and hydrogen bromide will give |
| A. | bromoethane |
| B. | bromide |
| C. | bromoethanol |
| D. | bromoethane |
| Answer» B. bromide | |
| 2537. |
Each principal quantum shell consists of different numbers of |
| A. | magnetic field |
| B. | sub-shells |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 2538. |
The transfer of thermal energy in circulation within the fluids is termed as |
| A. | Convectional Current |
| B. | Conductional current |
| C. | All of above |
| D. | Radiational current |
| Answer» B. Conductional current | |
| 2539. |
Bronze in an alloy of |
| A. | tin |
| B. | copper |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2540. |
Down the group the hydrogen halides get |
| A. | less thermally stable |
| B. | more stable |
| C. | less reactive |
| D. | more reactive |
| Answer» B. more stable | |
| 2541. |
The two points on same line at same distance and speed are said to be in |
| A. | phase |
| B. | parallel |
| C. | pair |
| D. | displacement |
| Answer» B. parallel | |
| 2542. |
Aluminum is being extracted from |
| A. | ferrous |
| B. | bauxite ore |
| C. | copper ore |
| D. | iron ore |
| Answer» C. copper ore | |
| 2543. |
On heating strontium compounds will give off flames of color |
| A. | green |
| B. | red |
| C. | white |
| D. | blue |
| Answer» C. white | |
| 2544. |
The order of reaction are whole numbers |
| A. | seldom |
| B. | always |
| C. | never |
| D. | forever |
| Answer» B. always | |
| 2545. |
Across the period the atomic radius |
| A. | decreases |
| B. | increases |
| C. | constant |
| D. | remains same |
| Answer» B. increases | |
| 2546. |
The simplest whole number ratio which is representing one molecule is called |
| A. | empirical formula |
| B. | molecular formula |
| C. | none |
| D. | both a and b |
| Answer» B. molecular formula | |
| 2547. |
The amount of matter in a body is termed as |
| A. | Force |
| B. | Weight |
| C. | Tension |
| D. | Mass |
| Answer» E. | |
| 2548. |
The height of the crest or depth of the trough from center is called |
| A. | wavelength |
| B. | wave distance |
| C. | amplitude |
| D. | phase length |
| Answer» D. phase length | |
| 2549. |
The formula for calculating the heat capacity is |
| A. | Q = C/Δθ |
| B. | H = Δθ/Q |
| C. | C = Q/Δθ |
| D. | Q = H/Δθ |
| Answer» D. Q = H/Δθ | |
| 2550. |
The SI Unit for length is |
| A. | inches |
| B. | centimeter |
| C. | yards |
| D. | meter |
| Answer» E. | |