MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 1184 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1101. |
Amphoteric exides are those which possess ____________ properties? |
| A. | Acidic |
| B. | Basic |
| C. | Acidic and basic |
| D. | Neutral and acidic |
| Answer» D. Neutral and acidic | |
| 1102. |
Amorphous substances posses_________________? |
| A. | No definite geometry |
| B. | No definite heat of fusion |
| C. | No sharp melting points |
| D. | All of the above |
| Answer» D. All of the above | |
| 1103. |
Among the halogens the rare element is________________? |
| A. | Fluorine |
| B. | Chlorine |
| C. | Astatine |
| D. | Iodine |
| Answer» D. Iodine | |
| 1104. |
Among halogens the highest boiling point is of___________________? |
| A. | Flrorine |
| B. | Chlorine |
| C. | Bromine |
| D. | Iodine |
| Answer» E. | |
| 1105. |
Ammonia may be prepared by heating ammonium chloride with_______________? |
| A. | Water |
| B. | NaCl |
| C. | Aqueous sodium hydroxide |
| D. | H2SO4 |
| Answer» D. H2SO4 | |
| 1106. |
Amino acids present in cheese___________________? |
| A. | lysine |
| B. | alanine |
| C. | tyrosine |
| D. | proline |
| Answer» D. proline | |
| 1107. |
Aluminium oxide is_________________? |
| A. | Acidic oxide |
| B. | Basic oxide |
| C. | Amphoteric oxide |
| D. | It does not exists |
| Answer» D. It does not exists | |
| 1108. |
Alpha particles can be detected by using___________? |
| A. | Gold foils |
| B. | Barium sulphate |
| C. | Zinc sulphide screen |
| D. | Thin Aluminium sheet |
| Answer» D. Thin Aluminium sheet | |
| 1109. |
Alpha (α) particles are helium (He) nucleus with a charge of __________ ? |
| A. | e |
| B. | 2e |
| C. | 3e |
| D. | 4e |
| Answer» C. 3e | |
| 1110. |
Allotropic form of phosphorus that is poisonous is___________________? |
| A. | White |
| B. | Red |
| C. | Black |
| D. | Violet |
| Answer» B. Red | |
| 1111. |
All the transition elements show_________________? |
| A. | Similar physical properties |
| B. | Similar chemical properties |
| C. | Both A and b |
| D. | None |
| Answer» E. | |
| 1112. |
All the following variables are used to describle gases except__________________? |
| A. | pressure |
| B. | volume |
| C. | moles |
| D. | density |
| Answer» E. | |
| 1113. |
All the enthalpy changes are________________? |
| A. | Negative |
| B. | Positive |
| C. | May or may not be A or B |
| D. | none |
| Answer» D. none | |
| 1114. |
All the elements in group VIA are ___________________ in nature? |
| A. | hygroscopic |
| B. | metals |
| C. | polymeric |
| D. | all of above |
| Answer» D. all of above | |
| 1115. |
All proteins yield ___________ upon complete hydrolysis? |
| A. | Nitrogen |
| B. | Amino acids |
| C. | Carbon and hydrogen |
| D. | Sulphur |
| Answer» C. Carbon and hydrogen | |
| 1116. |
All of the following were theorized by Bohr in his description of the atom except__________________? |
| A. | Angular momentum of electrons in multiples of h/2? |
| B. | Electrons revolve in discrete circular orbits |
| C. | Energy of each electron is directly proportional to n2 |
| D. | Electrons radiate energy continuously in a given orbit. |
| Answer» E. | |
| 1117. |
All of the following substances are crystalline except_____________? |
| A. | Ice |
| B. | Diamond |
| C. | Sucrose |
| D. | Plastic |
| Answer» E. | |
| 1118. |
Alkyl halides undergo a type of reaction_________________? |
| A. | Nucleophilic substitution |
| B. | Nucleophilic addition |
| C. | Elimination |
| D. | both A & C |
| Answer» E. | |
| 1119. |
Alkyl halides are considered to be very reactive compounds towards nucleophile because_________________? |
| A. | they have an electrophilic carbon |
| B. | they have an electrophilic carbon & a good leaving group |
| C. | they have an electrophilic carbon & a bad leaving group |
| D. | they have a nucleophilic carbon & a good leaving group |
| Answer» C. they have an electrophilic carbon & a bad leaving group | |
| 1120. |
Alkenes are produced from dehalogenation of________________? |
| A. | dihalo alkane |
| B. | trihalo alkane |
| C. | vicinal dihalo alkane |
| D. | vicinal trihalo alkane |
| Answer» D. vicinal trihalo alkane | |
| 1121. |
Alkanes containing a methyl group on main chain at 2nd carbon are called________________? |
| A. | iso-alkane |
| B. | normal-alkane |
| C. | neo-alkane |
| D. | branched-alkane |
| Answer» B. normal-alkane | |
| 1122. |
Alkanes are also known as________________? |
| A. | saturated hydrocarbon |
| B. | unsaturated hydrocarbon |
| C. | paraffins |
| D. | both A & C |
| Answer» D. both A & C | |
| 1123. |
Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________? |
| A. | Smaller electronegativity of alkali metals |
| B. | Smaller ionic radius of these metals |
| C. | De-excitation of electrons from higher energy levels to low energy level |
| D. | Excitation of electrons from low energy levels to higher energy levels |
| Answer» D. Excitation of electrons from low energy levels to higher energy levels | |
| 1124. |
Aldehyde and ketone have same general formula for homologous series_________________? |
| A. | CnH2nO2n |
| B. | CnH2n |
| C. | CnH2nO |
| D. | CnH2nOn+1 |
| Answer» D. CnH2nOn+1 | |
| 1125. |
AgCl dissolved with conc (2×10-2) Ksp will be__________________? |
| A. | 3.6 x 10-6 |
| B. | 3.6 x 10-5 |
| C. | 7.2 x 10-6 |
| D. | 4 x 10-4 |
| Answer» E. | |
| 1126. |
Addition of urea to the soil is ____________ reaction? |
| A. | endothermic |
| B. | exothermic |
| C. | both a and b |
| D. | no heat energy is involved |
| Answer» C. both a and b | |
| 1127. |
Addition of CH3COOH and CH3COONa gives in water_______________? |
| A. | Standard solution |
| B. | buffer solution |
| C. | acidic buffer solution |
| D. | both B & C |
| Answer» E. | |
| 1128. |
Addition of 2% gypsum in cement________________? |
| A. | Triggers hydration |
| B. | Triggers hydrolysis |
| C. | Prevents rapid hardening |
| D. | all of the above |
| Answer» D. all of the above | |
| 1129. |
Addition of 2nd electron to a uni negative ion is always____________________? |
| A. | Exothermic |
| B. | Endothermic |
| C. | Data is insufficient |
| D. | Unpredictable |
| Answer» C. Data is insufficient | |
| 1130. |
Activated complex is formed due to________________? |
| A. | Pressure |
| B. | Effective collision |
| C. | Ineffective collisions |
| D. | Temperature |
| Answer» C. Ineffective collisions | |
| 1131. |
Actinides are the elements with atomic number from: |
| A. | 97 to 104 |
| B. | 101 to 115 |
| C. | 89 to 103 |
| D. | 36 to 43 |
| Answer» D. 36 to 43 | |
| 1132. |
Across short period the melting and boiling point increase upto __________________? |
| A. | IIIA group |
| B. | IVA group |
| C. | VA group |
| D. | VIA group |
| Answer» C. VA group | |
| 1133. |
Acidic amino acids have________________? |
| A. | 2 amino groups and 1 carboxylic group |
| B. | 1 amino and 1 carboxylic groups |
| C. | 2 carboxylic groups and 1 amino group |
| D. | 2 amino and 2 carboxylic groups |
| Answer» D. 2 amino and 2 carboxylic groups | |
| 1134. |
Acid present in acid rain may be__________________? |
| A. | H2SO4 |
| B. | HNO3 |
| C. | both A and B |
| D. | none |
| Answer» D. none | |
| 1135. |
Acid present in acid rain may be_________________? |
| A. | H2SO4 |
| B. | HNO3 |
| C. | both A and B |
| D. | none of the above |
| Answer» D. none of the above | |
| 1136. |
Acetophenone is a_____________________? |
| A. | Ether |
| B. | Ketone |
| C. | Aldehyde |
| D. | Ester |
| Answer» C. Aldehyde | |
| 1137. |
Acetone reacts with HCN to form a cyanohydrin. It is an example of________________? |
| A. | electronphilic addition |
| B. | electrophilic substitution |
| C. | nucleophilic addition |
| D. | nucleophilic substitution |
| Answer» D. nucleophilic substitution | |
| 1138. |
Acetic anhydride can be obtained by treating ethyl alcohol with___________________? |
| A. | P2O5 |
| B. | H2SO4 |
| C. | Both A and B |
| D. | PCI5 |
| Answer» D. PCI5 | |
| 1139. |
Acetaldehyele cyanohydrin on acid hydrolysis yields___________________? |
| A. | Tartaric acid |
| B. | Propanoic acid |
| C. | Lactic acid |
| D. | Valeric acid |
| Answer» D. Valeric acid | |
| 1140. |
Acetal on acid hydrolysis generates__________________? |
| A. | Alcohol |
| B. | Ketone |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 1141. |
According to vital force theory_______________? |
| A. | organic compounds can be synthesized from inorganic compounds |
| B. | organic compounds cannot be synthesized from inorganic compounds |
| C. | organic compounds can be synthesized by animals |
| D. | organic compounds can be synthesized by plants |
| Answer» C. organic compounds can be synthesized by animals | |
| 1142. |
According to VESPR Model the geometry of molecule having 5 bond pair in outer most shell will be __________________? |
| A. | Triangular |
| B. | Square planner |
| C. | Trigonal bipyramidal |
| D. | Octahedral |
| Answer» E. | |
| 1143. |
According to Journal of Biological Chemistry 158, human brain and heart are composed of ________water? |
| A. | 75% |
| B. | 81% |
| C. | 73% |
| D. | 89% |
| Answer» D. 89% | |
| 1144. |
Absolute alcohol is obtained when rectified spirit is treated with__________________? |
| A. | Ca(OH)2 |
| B. | CaCO3 |
| C. | CaCl2 |
| D. | CaO |
| Answer» E. | |
| 1145. |
A theoretical link between quantum mechanics and thermodynamics is_________? |
| A. | Electrchemistry |
| B. | Matrix mechanics |
| C. | Statistical thermodynamics |
| D. | Soectroscopic analysis |
| Answer» D. Soectroscopic analysis | |
| 1146. |
A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________? |
| A. | Adsorption chromatography |
| B. | Ascending chromatography |
| C. | Radial chromatography |
| D. | Descending chromatography |
| Answer» C. Radial chromatography | |
| 1147. |
A substance which increases the reactivity of enzyme is called_________________? |
| A. | Promoters |
| B. | Inhibitors |
| C. | Stimulators |
| D. | Non-activators |
| Answer» B. Inhibitors | |
| 1148. |
A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound? |
| A. | C2H4 |
| B. | C3H6 |
| C. | C4H8 |
| D. | C5H10 |
| Answer» D. C5H10 | |
| 1149. |
A substance having very high vapour pressure at its melting point on heating will show_______________? |
| A. | Melting |
| B. | Sublimation |
| C. | Decomposition |
| D. | Condensation |
| Answer» C. Decomposition | |
| 1150. |
A specie with maximum number of unpaired electrons ? |
| A. | F |
| B. | H2O |
| C. | HF |
| D. | NH-2 |
| Answer» E. | |