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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.
| 2151. |
The gas which is slightly soluble in water is |
| A. | CO |
| B. | |
| C. | CO |
| D. | none |
| E. | both |
| Answer» B. | |
| 2152. |
For complex molecules the chemist usually used to represent a molecule by |
| A. | skeletal formula |
| B. | molecular formula |
| C. | b and c |
| D. | structural formula |
| Answer» D. structural formula | |
| 2153. |
The element which perfectly matched the qualities which Mendeleev predicted in his Periodic table was |
| A. | geranium |
| B. | silicon |
| C. | radon |
| D. | radium |
| Answer» B. silicon | |
| 2154. |
The representation of a chemical reaction in shorthand way is via a |
| A. | formula |
| B. | symbol equation |
| C. | All of Above |
| D. | covalent bonds |
| Answer» C. All of Above | |
| 2155. |
Scalar quantity in four of the following is |
| A. | velocity |
| B. | acceleration |
| C. | energy |
| D. | force |
| Answer» D. force | |
| 2156. |
If a solution on addition of small amounts of acids or bases doesn't change significantly and maintains its ph is called a |
| A. | unsaturated solution |
| B. | saturated solution |
| C. | super saturated solution |
| D. | buffer solution |
| Answer» E. | |
| 2157. |
Enthalpy change after formation of 1 mole of gaseous atoms from its element is called enthalpy change of |
| A. | gaseous |
| B. | atomization |
| C. | electron affinity |
| D. | moles |
| Answer» C. electron affinity | |
| 2158. |
The total of the oxidation number is its |
| A. | volatility |
| B. | charge |
| C. | oxidation |
| D. | reduction |
| Answer» C. oxidation | |
| 2159. |
A paint bucket of mass 3 kg is lifted at a constant speed to a height of 25 m above the ground. Calculate the gravitational potential energy gained by the bucket if the acceleration due to gravity is assumed to be 10 m⁄s |
| A. | 75 J |
| B. | 750 J |
| C. | 0.75 J |
| D. | 7.5 J |
| Answer» C. 0.75 J | |
| 2160. |
Power is a |
| A. | Vector quantity |
| B. | Scalar quantity |
| C. | Derived quantity |
| D. | Base quantity |
| Answer» C. Derived quantity | |
| 2161. |
Compressions are formed where air pressure is |
| A. | lower |
| B. | higher |
| C. | zero |
| D. | normal |
| Answer» C. zero | |
| 2162. |
Temporary dipole-induced dipole forces are also called as |
| A. | electrovalent forces |
| B. | van der Walls forces |
| C. | None of Above |
| D. | electromagnetic forces |
| Answer» C. None of Above | |
| 2163. |
In magnesium oxide, the electronic configuration of magnesium is that of |
| A. | Helium (g) |
| B. | hydrogen (g) |
| C. | Argon (g) |
| D. | Neon (g) |
| Answer» E. | |
| 2164. |
Successive ionization energy helps us in |
| A. | number of electrons |
| B. | confirming electronic configuration |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2165. |
Every liquid is a poor conductor of electricity instead of |
| A. | molten iron |
| B. | molten steel |
| C. | molten copper |
| D. | molten mercury |
| Answer» E. | |
| 2166. |
In a benzene molecule each carbon atom shares one pair of electrons to |
| A. | neighboring atom on other side |
| B. | neighboring atom on one side |
| C. | all of them |
| D. | hydrogen atom |
| Answer» D. hydrogen atom | |
| 2167. |
The time taken to produce one complete wave is known as the period 'T' of the wave, 'T' is equal to |
| A. | Wavelength of the wave, λ |
| B. | Frequency of the wave, f |
| C. | 1 ⁄ (Frequency of the wave, f) |
| D. | 1 ⁄ (Wavelength of the wave, λ) |
| Answer» D. 1 ⁄ (Wavelength of the wave, λ) | |
| 2168. |
Halogens are themselves reduced hence they are |
| A. | reducing agents |
| B. | oxidizing agents |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 2169. |
Thermocouple thermometer tells |
| A. | accurate temperature |
| B. | approximate temperature |
| C. | variable temperature |
| D. | estimated temperature |
| Answer» B. approximate temperature | |
| 2170. |
Tetra chloromethane is a |
| A. | non-polar |
| B. | polar |
| C. | non-reactive |
| D. | reactive |
| Answer» B. polar | |
| 2171. |
In a comparison with benzene phenol readily reacts with |
| A. | electrophile |
| B. | nucleophiles |
| C. | none |
| D. | both a and b |
| Answer» B. nucleophiles | |
| 2172. |
Ethanol is used as |
| A. | fuel |
| B. | solvent |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2173. |
Whenever there is an occurrence of chemical reaction there lies a change in |
| A. | light |
| B. | heat |
| C. | All of Above |
| D. | energy |
| Answer» E. | |
| 2174. |
Hydrogen react following addition reactions with |
| A. | ketones |
| B. | aldehydes |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2175. |
The sideways overlapping constitutes the bond |
| A. | pi bond |
| B. | sigma bond |
| C. | none |
| D. | both a and b |
| Answer» B. sigma bond | |
| 2176. |
Oxides of group IV behave as |
| A. | base |
| B. | acid |
| C. | alkalis |
| D. | amphoteric |
| Answer» E. | |
| 2177. |
When burned with oxygen, sodium gives off a |
| A. | violet flame |
| B. | blue flame |
| C. | pink flame |
| D. | yellow flame |
| Answer» E. | |
| 2178. |
The features of group VII elements involves |
| A. | diatomic molecules |
| B. | non-metals |
| C. | all of them |
| D. | single covalent bond |
| Answer» D. single covalent bond | |
| 2179. |
Catalysis of hydrolysis of esters is done by |
| A. | ethers |
| B. | hydrogen ions |
| C. | all of them |
| D. | alcohols |
| Answer» C. all of them | |
| 2180. |
The specific latent heat of hot chocolate is 60 J kg |
| A. | 20 J |
| B. | 180 J |
| C. | 57 J |
| D. | 63 J |
| Answer» B. 180 J | |
| 2181. |
Water has high |
| A. | viscosity |
| B. | surface tension |
| C. | All of Above |
| D. | density |
| Answer» D. density | |
| 2182. |
Nobles gases are liquefied at |
| A. | low temperatures |
| B. | high temperatures |
| C. | low pressures |
| D. | high pressures |
| Answer» B. high temperatures | |
| 2183. |
Primary alcohol is gently heated to produce aldehyde in presence of solution of acidified |
| A. | dichromate |
| B. | hydroxide |
| C. | all of them |
| D. | ethanol |
| Answer» B. hydroxide | |
| 2184. |
On addition of alkali zwitterion ion willl reform |
| A. | carboxylic group |
| B. | amine |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 2185. |
The oxides of Al and Si are |
| A. | reactive with water |
| B. | soluble in water |
| C. | forms ions with water |
| D. | insoluble in water |
| Answer» E. | |
| 2186. |
Pressure of a fixed mass of gas at constant volume is a physical property of |
| A. | Thermocouple thermometer |
| B. | Mercury-in-glass thermometer |
| C. | Constant-volume gas thermometer |
| D. | Resistance thermometer |
| Answer» D. Resistance thermometer | |
| 2187. |
Reaction which involves the breakage of O-H bond in alcohols is |
| A. | easterfication |
| B. | hydrolysis |
| C. | none |
| D. | easterlytic |
| Answer» B. hydrolysis | |
| 2188. |
The number of specified particles in 1 mole is |
| A. | L |
| B. | Avogadro constant |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 2189. |
All tetra chlorides are hydrolyzed by water except |
| A. | SiCl4 |
| B. | CCl4 |
| C. | PbCl4 |
| D. | SnCl4 |
| Answer» C. PbCl4 | |
| 2190. |
Energy is the |
| A. | capacity of power |
| B. | ability to do work |
| C. | input |
| D. | efficiency |
| Answer» C. input | |
| 2191. |
The rate of transfer of energy by radiation can be increased by |
| A. | decreasing the surface area |
| B. | increasing the surface temperature |
| C. | decreasing the atmospheric pressure |
| D. | using shiny white surfaces instead of dull and black surfaces |
| Answer» C. decreasing the atmospheric pressure | |
| 2192. |
The pressure which is being exerted by vapor in equilibrium state is known as |
| A. | equilibrium |
| B. | vapor pressure |
| C. | exothermic |
| D. | endothermic |
| Answer» C. exothermic | |
| 2193. |
The liquid turns back to solid while freezing because |
| A. | kinetic energy increases |
| B. | intermolecular bonds get strong |
| C. | collision increases |
| D. | vibration increases |
| Answer» C. collision increases | |
| 2194. |
In cells, amino acids used to build proteins are |
| A. | 12 |
| B. | 10 |
| C. | 22 |
| D. | 20 |
| Answer» E. | |
| 2195. |
Non-metal elements with diatomic molecules are from |
| A. | group IV |
| B. | group II |
| C. | group III |
| D. | group VII |
| Answer» E. | |
| 2196. |
Carbonmonooxide is |
| A. | reactive with oxygen |
| B. | polar |
| C. | All of Above |
| D. | reducing agent |
| Answer» D. reducing agent | |
| 2197. |
Chlorine water added to sodium bromide will change its color to |
| A. | yellowish brown |
| B. | blue |
| C. | white |
| D. | purple |
| Answer» B. blue | |
| 2198. |
The concentrated aqueous solution of sodium chloride is called as |
| A. | milk of magnesia |
| B. | brine |
| C. | none |
| D. | sludge |
| Answer» C. none | |
| 2199. |
Lone pair of electrons in water are |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 2200. |
Down the group II, thermal decomposition gradually |
| A. | decreases |
| B. | increases |
| C. | constant |
| D. | remains same |
| Answer» C. constant | |