MCQOPTIONS
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MCQOPTIONS
This section includes 634 Mcqs, each offering curated multiple-choice questions to sharpen your Boolean Algebra and Logic Simplification knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Tiny droplets of water (sulfuric acid solution) in clouds |
| A. | are not related to nitrogen cycle |
| B. | are an essential component of Nitrogen cycle |
| C. | All of Above |
| D. | are most damaging in trees of high altitudes |
| Answer» E. | |
| 102. |
Boron trifluoride is |
| A. | trigonal planar |
| B. | electron deficient |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 103. |
When the bond is formed by the sharing of two pairs of electrons by atoms, the bond if |
| A. | double covalent bond |
| B. | single covalent bond |
| C. | none |
| D. | triple covalent bond |
| Answer» B. single covalent bond | |
| 104. |
The speed of electromagnetic waves in vacuum is |
| A. | 4 x 108 m s-1 |
| B. | 30 x 108 m s-1 |
| C. | 6.0 x 108 m s-1 |
| D. | 3.0 x 108 m s-1 |
| Answer» E. | |
| 105. |
According to collision theory they reaction speed up when a frequency of reaction |
| A. | increases |
| B. | decreases |
| C. | equilibrium |
| D. | constant |
| Answer» B. decreases | |
| 106. |
Hydrogen Cyanide is |
| A. | colorless |
| B. | highly toxic |
| C. | all of them |
| D. | smell of almonds |
| Answer» D. smell of almonds | |
| 107. |
The electronic configuration of chromium is |
| A. | [Ar]2d4,4s2 |
| B. | [Ar]2d5,4s1 |
| C. | [Ar]2d4,4s1 |
| D. | [Ar]2d5,4s2 |
| Answer» C. [Ar]2d4,4s1 | |
| 108. |
The density of which of these metals is lowest? |
| A. | Ca |
| B. | Be |
| C. | Mg |
| D. | Sr |
| Answer» B. Be | |
| 109. |
Nitrogen molecule is the example of |
| A. | double covalent bond |
| B. | single covalent bond |
| C. | none |
| D. | triple covalent bond |
| Answer» E. | |
| 110. |
Covalent bonds can be break by |
| A. | heterolytic fission |
| B. | homolytic fission |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 111. |
A box of candies weighs 40 N. If the acceleration due to gravity = 10 m⁄s2, the mass of this box equals |
| A. | 4 kg |
| B. | 0.4 kg |
| C. | None of the above |
| D. | 40 kg |
| Answer» B. 0.4 kg | |
| 112. |
Polystyrene drinking cup can act like the apparatus of |
| A. | spectrometer |
| B. | calorimeter |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 113. |
Uneven breaking of bond is |
| A. | heterolytic fission |
| B. | homolytic fission |
| C. | multiple fission |
| D. | binary fission |
| Answer» B. homolytic fission | |
| 114. |
The formula for work done is |
| A. | F/s, where F is force and s is displacement |
| B. | F x s, where F is force and s is displacement |
| C. | F -s, where F is force and s is displacement |
| D. | F + s, where F is force and s is displacement |
| Answer» C. F -s, where F is force and s is displacement | |
| 115. |
Each atom in a Chlorine molecule has three lone electrons and |
| A. | two pairs of shared electrons |
| B. | one pair of shared electrons |
| C. | Chorine molecule forms ionic bonds |
| D. | three pairs of shared electrons |
| Answer» C. Chorine molecule forms ionic bonds | |
| 116. |
Energy is a |
| A. | Vector quantity |
| B. | Scalar quantity |
| C. | Derived quantity |
| D. | Base quantity |
| Answer» C. Derived quantity | |
| 117. |
The reverse process that involves changing a gas to a liquid is known as |
| A. | Boiling |
| B. | Melting |
| C. | Solidification |
| D. | Condensation |
| Answer» E. | |
| 118. |
Air molecules |
| A. | take up space but have no weight |
| B. | have weight but take up no space |
| C. | don't take up space and also have no weight |
| D. | have weight and take up space |
| Answer» E. | |
| 119. |
The turning of liquid into gas is termed as |
| A. | boiling |
| B. | melting |
| C. | condensation |
| D. | freezing |
| Answer» B. melting | |
| 120. |
To increase the temperature of 1 g of water by 1CC it requires energy equals to |
| A. | 4.81J |
| B. | 4.18J |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 121. |
Secondary alcohol forms ketone and water by reacting with |
| A. | oxygen molecule |
| B. | oxygen atom |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 122. |
Covalent solids are |
| A. | are non-conductors of electricity |
| B. | good conductors of electricity |
| C. | have a sea of delocalized neutrons |
| D. | are poor conductors of electricity |
| Answer» B. good conductors of electricity | |
| 123. |
Durian fruit has a very strong smell which is mostly found in |
| A. | Indonesia |
| B. | Malaysia |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 124. |
Every temperature measuring instrument makes use of a physical property of a substance in order to measure temperature objectively, which physical property is used by Mercury-in-glass thermometer? |
| A. | Volume of a fixed mass of liquid |
| B. | Electromotive force |
| C. | Pressure of a fixed mass of gas at constant volume |
| D. | Resistance of a piece of metal |
| Answer» B. Electromotive force | |
| 125. |
In symbols, one watt is equal to |
| A. | 1 s J-1 |
| B. | 1 J s-1 |
| C. | 1 J m-1 |
| D. | 1 m J-1 |
| Answer» C. 1 J m-1 | |
| 126. |
The square of orbital period is proportional to |
| A. | square of radius |
| B. | radius |
| C. | square of diameter |
| D. | cube of radius |
| Answer» E. | |
| 127. |
The ideal temperature for calorimetry is |
| A. | 0.2 °C |
| B. | 0.1 °C |
| C. | 0.5 °C |
| D. | both a and b |
| Answer» E. | |
| 128. |
Change of orange color of Cr(VI) to green color of Cr(III) indicates the presence of a |
| A. | oxidizing agent |
| B. | reducing agent |
| C. | Both A and B |
| D. | None of These |
| Answer» C. Both A and B | |
| 129. |
HCN undergoes Nucleophilic addition reaction to give product of |
| A. | hydroxynitrile |
| B. | hydrogen cyanide |
| C. | all of them |
| D. | hydroxyl amine |
| Answer» B. hydrogen cyanide | |
| 130. |
The benefits of button size cells includes |
| A. | high voltage |
| B. | lightweight |
| C. | all of them |
| D. | constant voltage |
| Answer» D. constant voltage | |
| 131. |
Hess's law states that a chemical reaction is independent of the route by which chemical reactions takes place while keeping the same |
| A. | final conditions |
| B. | initial conditions |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 132. |
Elements and their isotopes have different |
| A. | number of electrons |
| B. | number of protons |
| C. | mass numbers |
| D. | chemical properties |
| Answer» D. chemical properties | |
| 133. |
A yellow precipitate formed with methyl ketone is |
| A. | iodoform |
| B. | tri-iodomethane |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 134. |
Solids have |
| A. | fixed shape, fixed volume, high density and are incompressible |
| B. | fixed shape, fixed volume, low density and are incompressible |
| C. | fixed shape, fixed volume, high density and are compressible |
| D. | fixed shape, fixed volume, low density and are compressible |
| Answer» B. fixed shape, fixed volume, low density and are incompressible | |
| 135. |
Specific heat capacity of mercury is |
| A. | 140 J kg-1 °C-1 |
| B. | 120 J kg-1 °C-1 |
| C. | 180 J kg-1 °C-1 |
| D. | 160 J kg-1 °C-1 |
| Answer» B. 120 J kg-1 °C-1 | |
| 136. |
If we move a positive charge to a positive plate then potential energy of charge is |
| A. | increased |
| B. | decreased |
| C. | none of above |
| D. | remains constant |
| Answer» B. decreased | |
| 137. |
The compounds formed by group IV elements and chlorine are called |
| A. | chloride |
| B. | fluorides |
| C. | tetra fluorides |
| D. | tetra chlorides |
| Answer» E. | |
| 138. |
The molecular structure of an ammonia molecule is |
| A. | linear |
| B. | tetrahedral |
| C. | trigonal |
| D. | triangular pyramidal |
| Answer» E. | |
| 139. |
The vacuum in a vacuum flask prevents the heat transfer through the process of |
| A. | Convection only |
| B. | Conduction only |
| C. | Radiation only |
| D. | Conduction and Convection |
| Answer» E. | |
| 140. |
The combined capacitance is equal to the |
| A. | product of all the capacitance |
| B. | sum of all capacitance of capacitors |
| C. | none of above |
| D. | difference between the capacitors |
| Answer» C. none of above | |
| 141. |
When heated, which of these metals burn with a white flame in a jar of oxygen? |
| A. | Mg (s) |
| B. | Al (s) |
| C. | both of these |
| D. | None of Above |
| Answer» D. None of Above | |
| 142. |
Nitric acid is good |
| A. | reducing agent |
| B. | oxidizing agent |
| C. | reactant |
| D. | both |
| Answer» C. reactant | |
| 143. |
The electro negativity of oxygen is equal to |
| A. | 3.5 |
| B. | zero |
| C. | 5.3 |
| D. | 4.5 |
| Answer» B. zero | |
| 144. |
Which of these Halogens have orange/brown color? |
| A. | Cl2 |
| B. | F2 |
| C. | I2 |
| D. | Br2 |
| Answer» E. | |
| 145. |
Which of the given elements have highest MP in Group II elements? |
| A. | Ba |
| B. | Be |
| C. | Mg |
| D. | Ca |
| Answer» C. Mg | |
| 146. |
Consider the reaction: SiCl4(l) + H2O(l) → SiO2 (s) + HCl. How many moles of HCl will be produced after balancing the equation? |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» B. 2 | |
| 147. |
Fixed volumes is a characteristic of |
| A. | solids |
| B. | liquids |
| C. | Both A and B |
| D. | None of These |
| Answer» D. None of These | |
| 148. |
There is less attraction between fifth electron of Boron and nucleus, hence that electron reside in |
| A. | 2p |
| B. | 1s |
| C. | 4d |
| D. | 3s |
| Answer» B. 1s | |
| 149. |
When a pendulum bob is displaced to one side, it gains |
| A. | Elastic Potential Energy |
| B. | Chemical Potential Energy |
| C. | Kinetic energy |
| D. | Gravitational Potential Energy |
| Answer» E. | |
| 150. |
The resistance of a copper wire at ice point is 50 Ω and 100 Ω at steam point, and the resistance of wire is 70 Ω the room temperature would be |
| A. | 20 °C |
| B. | 10 °C |
| C. | 40 °C |
| D. | 30 °C |
| Answer» D. 30 °C | |