MCQOPTIONS
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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.
| 1601. |
Pi bonds in benzene spread over all six carbons hence they are called |
| A. | spectators |
| B. | delocalized |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1602. |
Chemists have produced low sulfur version of petrol and diesel to reduce emission of |
| A. | carbon dioxide |
| B. | sulfur dioxide |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1603. |
Glass,furnance lining and abrasive for grinding is done by the ceramic which contain |
| A. | aluminum oxide |
| B. | magnesium oxide |
| C. | All of Above |
| D. | silicon oxide |
| Answer» B. magnesium oxide | |
| 1604. |
Evaporation occurs at |
| A. | low temperature |
| B. | high temperature |
| C. | solid surface |
| D. | any temperature |
| Answer» E. | |
| 1605. |
Easters smells is |
| A. | fruity |
| B. | sweet |
| C. | pungent |
| D. | both a and b |
| Answer» E. | |
| 1606. |
A large room which is filled with 2600 moles of gases contains 60 kg of nitrogen and 17 kg of |
| A. | hydrogen |
| B. | oxygen |
| C. | none |
| D. | carbon dioxide |
| Answer» C. none | |
| 1607. |
Saliva neutralizes acid, therefore it is slightly |
| A. | acidic |
| B. | alkaline |
| C. | amphoteric |
| D. | basic |
| Answer» C. amphoteric | |
| 1608. |
Tin and lead have same metallic structure at |
| A. | low temperature |
| B. | high temperature |
| C. | never |
| D. | room temperature |
| Answer» E. | |
| 1609. |
In enthalpy profile diagram the reactants and products are represented on |
| A. | x-axis |
| B. | z-axis |
| C. | b and c |
| D. | y-axis |
| Answer» E. | |
| 1610. |
Halogens are the elements of |
| A. | Group VII |
| B. | Group II |
| C. | Group IV |
| D. | Group III |
| Answer» B. Group II | |
| 1611. |
The Van der vaal forces are directly proportional to the |
| A. | pressure |
| B. | temperature |
| C. | boiling point |
| D. | electro negativity |
| Answer» D. electro negativity | |
| 1612. |
The volatility of the Halogens can be estimated through the |
| A. | Melting Point |
| B. | Atomic Radii |
| C. | All of Above |
| D. | Boiling Point |
| Answer» E. | |
| 1613. |
The bond angle of SF |
| A. | 180° |
| B. | 90° |
| C. | 87.5° |
| D. | 120° |
| Answer» C. 87.5° | |
| 1614. |
Boiling takes place |
| A. | only at the surface |
| B. | throughout the liquid |
| C. | at the bottom only |
| D. | from the sides only |
| Answer» C. at the bottom only | |
| 1615. |
Different types of lone pairs possess different amount of |
| A. | attraction |
| B. | repulsion |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1616. |
When a covalent bond is formed between hydrogen and a very electronegative atom, then the bond is highly |
| A. | electronegative |
| B. | polarized |
| C. | unstable |
| D. | stable |
| Answer» C. unstable | |
| 1617. |
The word kinetic means |
| A. | force |
| B. | to move |
| C. | thrust |
| D. | pressure |
| Answer» C. thrust | |
| 1618. |
The force applied by a lady is 2 N and the moment of force is 16 N m, the distance of pivot from the effort would be |
| A. | 8 N |
| B. | 32 N |
| C. | 18 N |
| D. | 14 N |
| Answer» B. 32 N | |
| 1619. |
in Group IV, the highest melting point is of |
| A. | Tin (Sn) |
| B. | Carbon(Diamond) |
| C. | Silicon (Si) |
| D. | Lead (Pb) |
| Answer» C. Silicon (Si) | |
| 1620. |
Volatile CFCs are used as |
| A. | propellants |
| B. | aerosols |
| C. | all of them |
| D. | solvents |
| Answer» D. solvents | |
| 1621. |
Non-stick lining of a sauce pan is due to halogen-polymer named as |
| A. | poly(tetrafluroethene) |
| B. | poly(ethene) |
| C. | none |
| D. | fluoroethene |
| Answer» B. poly(ethene) | |
| 1622. |
In CO |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» D. 6 | |
| 1623. |
Chlorine atoms are regarded as electron |
| A. | acceptor |
| B. | withdrawing group |
| C. | all of them |
| D. | donators |
| Answer» C. all of them | |
| 1624. |
Phenol undergoes ionization to give off more stable |
| A. | positive ion |
| B. | negative ion |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1625. |
Pressure in liquids is defined by the formula |
| A. | p = P/hg |
| B. | p = h/Pg |
| C. | p = hPg |
| D. | p = g/Ph |
| Answer» D. p = g/Ph | |
| 1626. |
Upon heating ammonium salts with a base, NH |
| A. | alkaline |
| B. | acidic |
| C. | None of Above |
| D. | Catalyst |
| Answer» B. acidic | |
| 1627. |
+7 is the oxidation number of which of these elements? |
| A. | Al |
| B. | Mg |
| C. | Cl |
| D. | Ar |
| Answer» D. Ar | |
| 1628. |
If an object is stationary which force is still acting on it? |
| A. | Tension |
| B. | Friction |
| C. | Resistance |
| D. | Weight |
| Answer» E. | |
| 1629. |
A loss of small molecule from the original organic molecule is |
| A. | substitution reaction |
| B. | elimination reaction |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1630. |
The proton number is denoted by the symbol |
| A. | Z |
| B. | A |
| C. | N |
| D. | P |
| Answer» B. A | |
| 1631. |
AlCl |
| A. | low pressure |
| B. | high pressure |
| C. | low temperature |
| D. | high temperature |
| Answer» D. high temperature | |
| 1632. |
The electronegativity of Al is |
| A. | 1.5 |
| B. | 0.9 |
| C. | 2.5 |
| D. | 2.1 |
| Answer» B. 0.9 | |
| 1633. |
In the creation of van der Walls' forces, which one of this series of actions happens first? |
| A. | Temporary dipoles are formed, because electron clouds are always moving. |
| B. | A temporary dipole is set up. |
| C. | Temporary dipole induces a dipole in neighboring atom/molecule. |
| D. | More of charge cloud gathers on one side of molecule/atom. |
| Answer» E. | |
| 1634. |
In order to identify precipitates which are obtained can be matched with respecting |
| A. | electro negativity |
| B. | melting point data |
| C. | masses |
| D. | polarity |
| Answer» C. masses | |
| 1635. |
The speed of the wave 'v' is give by |
| A. | wavelength of the wave × frequency of the wave |
| B. | wavelength of the wave ⁄ frequency of the wave |
| C. | None of the above |
| D. | frequency of the wave ⁄ wavelength of the wave |
| Answer» B. wavelength of the wave ⁄ frequency of the wave | |
| 1636. |
Friedrich August Kekule's structure of benzene was the inspiration of a |
| A. | nature |
| B. | chemist |
| C. | all of them |
| D. | dream |
| Answer» E. | |
| 1637. |
The atomic number is the number of |
| A. | electrons |
| B. | protons |
| C. | All of Above |
| D. | neutrons |
| Answer» C. All of Above | |
| 1638. |
The order of reaction is that power to which concentration of reactant is |
| A. | raised |
| B. | lowered |
| C. | constant |
| D. | stopped |
| Answer» B. lowered | |
| 1639. |
The formation of radicals which attack reactants molecules generate more free radicals is done is |
| A. | propagation step |
| B. | initiation step |
| C. | a and b |
| D. | termination step |
| Answer» B. initiation step | |
| 1640. |
If a person in the mall moves a trolley with a force of 60 N and the trolley moves the distance of 20 m, the work done will be |
| A. | 40 J |
| B. | 30 J |
| C. | 80 J |
| D. | 1200 J |
| Answer» E. | |
| 1641. |
The chloride ion have the same configuration as |
| A. | helium |
| B. | neon |
| C. | nitrogen |
| D. | argon |
| Answer» E. | |
| 1642. |
A ball of an unknown mass is thrown upward at a speed of 10 m⁄s, calculate the maximum height reached by the ball if the acceleration due to gravity is assumed to be 10 m⁄s |
| A. | 10 m |
| B. | 5 m |
| C. | 1 m |
| D. | 0.5 m |
| Answer» C. 1 m | |
| 1643. |
Thermocouple thermometer has a wide range from |
| A. | −s100 °C to 1500 °C |
| B. | −1000 °C to 1000 °C |
| C. | −200 °C to 1500 °C |
| D. | −150 °C to 2000 °C |
| Answer» D. −150 °C to 2000 °C | |
| 1644. |
Electron number from 2nd to 9th are present in same shell because the change in ionization is |
| A. | low to high |
| B. | high to low |
| C. | lastly |
| D. | gradual |
| Answer» E. | |
| 1645. |
The normal, incident ray and the reflective ray lie at a same point in |
| A. | refraction only |
| B. | reflection only |
| C. | none of them |
| D. | reflection and refraction both |
| Answer» E. | |
| 1646. |
When two solutions are mixed solubility product helps in determining whether there will be production of |
| A. | oxides |
| B. | salts |
| C. | all of them |
| D. | precipitates |
| Answer» E. | |
| 1647. |
The process in which the kinetic energy is transferred from one free electron to the other is termed as |
| A. | free electronic conduction |
| B. | electronic conduction |
| C. | free electron diffusion |
| D. | electron diffusion |
| Answer» D. electron diffusion | |
| 1648. |
A bus travels with a constant force of 5000 N and the work done by the bus is 2500 J, the distance travelled by the bus is |
| A. | 0.5 m |
| B. | 2 m |
| C. | 2500 m |
| D. | 7500 m |
| Answer» B. 2 m | |
| 1649. |
Plastic recyclable bottles are made from |
| A. | nylon |
| B. | Terylene |
| C. | all of them |
| D. | caprolactum |
| Answer» C. all of them | |
| 1650. |
A clinical thermometer has l |
| A. | 60 °C |
| B. | 50 °C |
| C. | 10 °C |
| D. | 75 °C |
| Answer» C. 10 °C | |