MCQOPTIONS
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MCQOPTIONS
This section includes 1262 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The most reactive allotropic form of phosphorus is________________? |
| A. | White |
| B. | Redox potential |
| C. | Black |
| D. | Violet |
| Answer» B. Redox potential | |
| 102. |
For industrial preparation of CH3CHO catalytic promoter is_________________? |
| A. | PdCl2 |
| B. | Cu2Cl2 |
| C. | CuCl2 |
| D. | PbCl2 |
| Answer» C. CuCl2 | |
| 103. |
Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________? |
| A. | n. butane |
| B. | Ethanol |
| C. | Ethane |
| D. | Diethy1 ether |
| Answer» D. Diethy1 ether | |
| 104. |
In the van der Waals equation (P + n2a / v2) (v – nb) = nRT which of the following statement is not true ? |
| A. | n2a/v correct for the intermolecular forces. |
| B. | nb correct for the volume occupied by gas molecules. |
| C. | at high densities the equation reduces to the ideal gas law |
| D. | all of the above statements are correct. |
| Answer» D. all of the above statements are correct. | |
| 105. |
The most paramagnetic element is____________________? |
| A. | Iron |
| B. | Cobalt |
| C. | Chromium |
| D. | Manganese |
| Answer» B. Cobalt | |
| 106. |
Which of the following is not a fatty acid ? |
| A. | Propanoic acid |
| B. | Acetic acid |
| C. | Phthalic acid |
| D. | Butanoic acid |
| Answer» D. Butanoic acid | |
| 107. |
Plasma is used in_________________? |
| A. | Fluorescent bulb |
| B. | Neon signs |
| C. | Lasers |
| D. | All of these |
| Answer» E. | |
| 108. |
Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ? |
| A. | Urea |
| B. | Calcium superphosphate |
| C. | Diammonium phosphate |
| D. | Potassium nitrate |
| Answer» B. Calcium superphosphate | |
| 109. |
Which of the following is pseudo solid_____________________? |
| A. | CaF2 |
| B. | NaCl |
| C. | Glass |
| D. | Diamond |
| Answer» D. Diamond | |
| 110. |
Atomic radius can be determined by_________________? |
| A. | X – ray diffraction |
| B. | Spectrophotometer |
| C. | Optical microscope |
| D. | Electron microscope |
| Answer» B. Spectrophotometer | |
| 111. |
Bohrs model is contradicted by__________________? |
| A. | Plancks theory |
| B. | Dual nature of matter |
| C. | Heisenbergs uncertainty principle |
| D. | All of these |
| Answer» D. All of these | |
| 112. |
For which system does the equilibrium constant Kc has unit of (concentration)-1__________________? |
| A. | N2+3H2 2NH3 |
| B. | H2+I2 2HI |
| C. | 2NO2 N2H4 |
| D. | PCI5 PCI3+CI2 |
| Answer» D. PCI5 PCI3+CI2 | |
| 113. |
In 1 – pentene -4- yne the carbon exhibit hybridization_________________? |
| A. | sp3 – sp2 |
| B. | sp2 – sp |
| C. | sp2 – sp |
| D. | sp3 – sp2 – sp |
| Answer» E. | |
| 114. |
Main source of organic compounds is__________________? |
| A. | Animal |
| B. | Fossil |
| C. | Coal |
| D. | Plants |
| Answer» B. Fossil | |
| 115. |
18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________? |
| A. | 8 |
| B. | 5.1 |
| C. | 6 |
| D. | one/fifty one |
| Answer» E. | |
| 116. |
Which one is not the use of silicones________________________? |
| A. | Lubricant |
| B. | Water repellent film |
| C. | Rubber sheet |
| D. | Medicine |
| Answer» E. | |
| 117. |
Keeping in view the size of atom which is in correct order___________________? |
| A. | Mg > Sr |
| B. | Ba > Mg |
| C. | Lu > Ce |
| D. | CI > 1 |
| Answer» C. Lu > Ce | |
| 118. |
When chlorine is passed through hot solution of caustic soda the reaction is said as___________________? |
| A. | Displacement |
| B. | Reduction |
| C. | Disproportionation reaction |
| D. | Double displacement reaction |
| Answer» D. Double displacement reaction | |
| 119. |
Which one does not exhibit aldol condensation___________________? |
| A. | Ethanal |
| B. | Acetone |
| C. | Benzaldehyde |
| D. | Butanone |
| Answer» D. Butanone | |
| 120. |
The common name of propane -1 3-dioic acid is____________________? |
| A. | Oxalic acid |
| B. | Succinic acid |
| C. | Malonic acid |
| D. | Fumaric acid |
| Answer» D. Fumaric acid | |
| 121. |
The mass of one mole of electron is________________? |
| A. | 1.008 |
| B. | 0.55 |
| C. | 0.184 |
| D. | 1.637 |
| Answer» C. 0.184 | |
| 122. |
Industrial materials thermal power stations are coated with__________________? |
| A. | Polyester resins |
| B. | Epoxy paints |
| C. | polyamide resins |
| D. | Polyvinyl chloride |
| Answer» C. polyamide resins | |
| 123. |
Organic compounds are soluble in ____________________? |
| A. | polar solvent |
| B. | non-polar solvent |
| C. | alkalies |
| D. | water |
| Answer» C. alkalies | |
| 124. |
Methane is used in power generation in chemical industries being a__________________? |
| A. | natural gas |
| B. | good caloric value |
| C. | cheaper |
| D. | All |
| Answer» D. All | |
| 125. |
Only sigma bonds are present in__________________? |
| A. | propene |
| B. | butanoic acid |
| C. | butanal |
| D. | ethoxy ethane |
| Answer» E. | |
| 126. |
Hydro carbons which burn with smoky flame are called_________________? |
| A. | Aliphatic |
| B. | Alicyclic |
| C. | Aromatic |
| D. | Aldehyde |
| Answer» D. Aldehyde | |
| 127. |
Stronger is the oxidizing agent greater is the___________________? |
| A. | Oxidation potential |
| B. | Redox potential |
| C. | e.m.f of cell |
| D. | standard reduction potential |
| Answer» E. | |
| 128. |
The structure of ethyne is_________________? |
| A. | angular |
| B. | trigonal |
| C. | linear |
| D. | trigonal planar |
| Answer» D. trigonal planar | |
| 129. |
The metallic sound produced by engine due to the pre-ignition of fuel is called _______________? |
| A. | knocking |
| B. | reforming |
| C. | cracking |
| D. | a and c |
| Answer» B. reforming | |
| 130. |
The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight____________________? |
| A. | polymerization |
| B. | pyrolysis |
| C. | isomerism |
| D. | no such process occurs |
| Answer» C. isomerism | |
| 131. |
At low temperature and pressure cracking can be done in presence of catalyst________________? |
| A. | Al2O3 |
| B. | Fe2O3 |
| C. | Al2O3 and SiO2 |
| D. | Fe2O3 and SiO2 |
| Answer» D. Fe2O3 and SiO2 | |
| 132. |
The general formula of cycloalkene is __________________? |
| A. | CnH2n |
| B. | CnH2n+2 |
| C. | CnH2n-1 |
| D. | CnH2n-2 |
| Answer» E. | |
| 133. |
A great variety of the organic compounds is due to its property of carbon_________________? |
| A. | Show tetravalency |
| B. | Exhibit catenation |
| C. | Show isomerism |
| D. | Can form multiple bonds |
| Answer» C. Show isomerism | |
| 134. |
The property of carbon chain formation is called _________________? |
| A. | catenation |
| B. | hybridization |
| C. | polymerization |
| D. | solvation |
| Answer» B. hybridization | |
| 135. |
C5H12 has the number of isomers ___________________? |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» D. four | |
| 136. |
Which one is not state function ________________? |
| A. | Internal energy |
| B. | Enthalpy |
| C. | Gibbs free energy |
| D. | Work |
| Answer» E. | |
| 137. |
Rate of reactions of most organic compounds are____________________? |
| A. | very slow |
| B. | very fast |
| C. | slow |
| D. | no regular character present |
| Answer» D. no regular character present | |
| 138. |
In sp3 hybridization the expected geometry of molecules will be__________________? |
| A. | square planar |
| B. | trigonal pyramidal |
| C. | tetrahedral |
| D. | linear |
| Answer» D. linear | |
| 139. |
Coal is produced after a long time decay of_________________? |
| A. | animals |
| B. | fossils |
| C. | wood |
| D. | all of the above |
| Answer» D. all of the above | |
| 140. |
Which one of the following is a state function ________________? |
| A. | pressure |
| B. | temperature |
| C. | enthalpy |
| D. | all of the above |
| Answer» E. | |
| 141. |
Crude oil is blackish coloured liquid produced after the decay of organic matter present between_________________? |
| A. | earth layer |
| B. | mountains |
| C. | sedimentary rocks |
| D. | rocks |
| Answer» D. rocks | |
| 142. |
the fractional distillation of petroleum produces gasoline up to ________________? |
| A. | 10% |
| B. | 15% |
| C. | 20% |
| D. | 30% |
| Answer» D. 30% | |
| 143. |
Pumping of water uphill is_______________? |
| A. | spontaneous process |
| B. | non-spontaneous process |
| C. | irreversible process |
| D. | reversible process |
| Answer» C. irreversible process | |
| 144. |
Most of thermodynamic parameters are_________________? |
| A. | system |
| B. | surrounding |
| C. | phase |
| D. | state functions |
| Answer» E. | |
| 145. |
In cyano group the carbon atom shows which kind of hybridization___________________? |
| A. | sp2 |
| B. | sp |
| C. | sp3 |
| D. | none of the above |
| Answer» C. sp3 | |
| 146. |
Unit of heat in SI system is________________? |
| A. | J |
| B. | KCaL |
| C. | Cal |
| D. | GJ |
| Answer» B. KCaL | |
| 147. |
Enthalpy of a reaction can be measured by ____________________? |
| A. | glass calorimeter |
| B. | manometer |
| C. | Barometer |
| D. | thermometer |
| Answer» B. manometer | |
| 148. |
Two fundamental ways to transfer energy are________________? |
| A. | pressure and temperature |
| B. | pressure and volume |
| C. | heat and work |
| D. | heat and volume |
| Answer» D. heat and volume | |
| 149. |
Enthalpy of combustion for food fuel and other compounds can be measured accurately by________________? |
| A. | glass calorimeter |
| B. | bomb calorimeter |
| C. | thermometer |
| D. | manometer |
| Answer» C. thermometer | |
| 150. |
Total energy of a system is_________________? |
| A. | P.E + K.E |
| B. | P.E + heat energy |
| C. | K.E + heat energy |
| D. | P.E + mechanical energy |
| Answer» B. P.E + heat energy | |