Maleic acid and fumaric acids are :-
Question: Maleic acid and fumaric acids are :-TautomersChain isomersGeometrical isomersFunctional isomersCorrect Option: , 3 Solution: Solution is not required...
Read More →1 gram of a carbonate
Question: 1 gram of a carbonate $\left(\mathrm{M}_{2} \mathrm{CO}_{3}\right)$ on treatment with excess $\mathrm{HCl}$ produces $0.01186$ mole of $\mathrm{CO}_{2}$. the molar mass of $\mathrm{M}_{2} \mathrm{CO}_{3}$ in $\mathrm{g} \mathrm{mol}^{-1}$ is :-118684.3118.611.86Correct Option: , 2 Solution:...
Read More →Dipole moment is shown by :-
Question: Dipole moment is shown by :-trans-2, 3-dichloro- 2-butene1, 2-dichlorobenzene1 , 4-dichlorobenzenetrans-1, 2-dinitroetheneCorrect Option: , 2 Solution: Solution not required...
Read More →Lithium forms body centred cubic structure.
Question: Lithium forms body centred cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will be :-152 pm75 pm300 pm240 pmCorrect Option: 1 Solution:...
Read More →The IUPAC name of the following compounds is :
Question: The IUPAC name of the following compounds is : (Z) - 5 - hepten $-3$ - yne(Z) - 2 - hepten $-4-$ yne(E) $-5$ - hepten $-3$ - yne(E) $-2$ - hepten $-4-$ yneCorrect Option: , 4 Solution: Solution is not required...
Read More →The most abundant elements by mass in the body of a healthy human adult are :
Question: The most abundant elements by mass in the body of a healthy human adult are : Oxygen $(61.4 \%)$; Carbon $(22.9 \%)$, Hydrogen $(10.0 \%)$; and Nitrogen $(2.6 \%)$. The weight which a $75 \mathrm{~kg}$ person would gain if all ${ }^{1} \mathrm{H}$ atoms are replaced by ${ }^{2} \mathrm{H}$ atoms is15 kg37.5 kg7.5 kg10 kgCorrect Option: , 3 Solution:...
Read More →Which of the following reactions is an example of a redox reaction?
Question: Which of the following reactions is an example of a redox reaction? $\mathrm{XeF}_{4}+\mathrm{O}_{2} \mathrm{~F}_{2} \rightarrow \mathrm{XeF}_{6}+\mathrm{O}_{2}$$\mathrm{XeF}_{2}+\mathrm{PF}_{5} \rightarrow\left[\mathrm{XeF}^{+} \mathrm{PF}_{6}^{-}\right.$$\mathrm{XeF}_{6}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{XeOF}_{4}+2 \mathrm{HF}$$\mathrm{XeF}_{6}+2 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{XeO}_{2} \mathrm{~F}_{2}+4 \mathrm{HF}$Correct Option: 1 Solution:...
Read More →In a face centred cubic lattice, atom A occupies the corner positions and atom B
Question: In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is :-$\mathrm{A}_{2} \mathrm{~B}_{3}$$\mathrm{A}_{2} \mathrm{~B}_{5}$$\mathrm{A}_{2} \mathrm{~B}$$\mathrm{AB}_{2}$Correct Option: , 2 Solution: Solution not required...
Read More →Identify the compound that exhibits tautomerism :-
Question: Identify the compound that exhibits tautomerism :-2-PentanonePhenol2-ButeneLactic acidCorrect Option: 1 Solution: Solution is not required...
Read More →At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combustion.
Question: At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combustion. After combustion the gases occupy 330 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is :-$\mathrm{C}_{4} \mathrm{H}_{10}$$\mathrm{C}_{3} \mathrm{H}_{6}$$\mathrm{C}_{3} \mathrm{H}_{8}$$\mathrm{C}_{4} \mathrm{H}_{8}$Correct Option: , 3 Solution: If further infor...
Read More →How manv electrons are involved in the following redox reaction?
Question: How manv electrons are involved in the following redox reaction? $\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{Fe}^{2+}+\mathrm{C}_{2} \mathrm{O}_{4}^{2-} \rightarrow \mathrm{Cr}^{3+}+\mathrm{Fe}^{3+}+\mathrm{CO}_{2}$ (Unbalanced)3456Correct Option: , 4 Solution: Solution Not Required...
Read More →Out of the following,
Question: Out of the following, the alkene that exhibits optical isomerism is :2 -methyl-2-pentene3-methyl-2-pentene4-methyl-1-pentene3-methyl-1-penteneCorrect Option: , 4 Solution: Solution is not required...
Read More →At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combustion.
Question: At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combustion. After combustion the gases occupy 330 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is :-$\mathrm{C}_{4} \mathrm{H}_{10}$$\mathrm{C}_{3} \mathrm{H}_{6}$$\mathrm{C}_{3} \mathrm{H}_{8}$$\mathrm{C}_{4} \mathrm{H}_{8}$Correct Option: Solution: If further informati...
Read More →The number of stereoisomers
Question: The number of stereoisomers possible for a compound of the molecular formula $\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}(\mathrm{OH})-\mathrm{Me}$ is :-4632Correct Option: 1 Solution:...
Read More →Consider the reaction
Question: Consider the reaction $\mathrm{H}_{2} \mathrm{SO}_{3(\mathrm{aq})}+\mathrm{Sn}_{(\mathrm{aq})}^{4+}+\mathrm{H}_{2} \mathrm{O}_{(\mathrm{I})} \rightarrow \mathrm{Sn}_{(\mathrm{aq})}^{2+}+\mathrm{HSO}_{4(\mathrm{aq})}^{-}+3 \mathrm{H}_{(\mathrm{aq})}^{+}$ Which of the following statements is correct?$\mathrm{H}_{2} \mathrm{SO}_{3}$ is the reducing agent because it undergoes oxidation$\mathrm{H}_{2} \mathrm{SO}_{2}$ is the reducing agent because it undergoes reduction$\mathrm{Sn}^{4+}$ is...
Read More →The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4.
Question: The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is :1 : 83 : 161 : 47 : 32Correct Option: Solution:...
Read More →Copper crystallises in fcc lattice with a unit cell edge of 361 pm
Question: Copper crystallises in fcc lattice with a unit cell edge of 361 pm. The radius of copper atom is:-181 pm108 pm128 pm157 pmCorrect Option: , 3 Solution: Solution not required...
Read More →Percentages of free space in cubic close packed structure and in body
Question: Percentages of free space in cubic close packed structure and in body centered packed structure are respectively :-48% and 26%30% and 26%26% and 32%32% and 48%Correct Option: , 3 Solution: Theory Based...
Read More →The edge length of a face centered cubic cell of an ionic
Question: The edge length of a face centered cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is :-144 pm288 pm398 pm618 pmCorrect Option: 1 Solution:...
Read More →The alkene that exhibits
Question: The alkene that exhibits geometrical isomerism is :-2-butene2-methyl-2-butenePropene2-methyl propeneCorrect Option: 1 Solution: Solution is not requried...
Read More →Solve this following
Question: In which of the following reaction $\mathrm{H}_{2} \mathrm{O}_{2}$ acts as a reducing agent ? (1) $\mathrm{H}_{2} \mathrm{O}_{2}+2 \mathrm{H}^{+}+2 \mathrm{e}^{-} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}$ (1) $\mathrm{H}_{2} \mathrm{O}_{2}-2 \mathrm{e}^{-} \rightarrow \mathrm{O}_{2}+2 \mathrm{H}^{+}$ (3) $\mathrm{H}_{2} \mathrm{O}_{2}+2 \mathrm{e}^{-} \rightarrow 2 \mathrm{OH}^{-}$ (4) $\mathrm{H}_{2} \mathrm{O}_{2}+2 \mathrm{OH}^{-}-2 \mathrm{e}^{-} \rightarrow \mathrm{O}_{2}+2 \mathrm...
Read More →When metal 'M' is treated with NaOH, a white gelatinous precipitate 'X' is obtained,
Question: When metal 'M' is treated with NaOH, a white gelatinous precipitate 'X' is obtained, which is soluble in excess of NaOH. Compound 'X' when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal 'M' isCaAlFeZnCorrect Option: , 2 Solution:...
Read More →In the context of the Hall-Heroult process for the extreaction of Al
Question: In the context of the Hall-Heroult process for the extreaction of Al, which of the following statements is false ?$\mathrm{Al}^{3+}$ is reduced at the cathode to form $\mathrm{Al}$$\mathrm{Na}_{3} \mathrm{AlF}_{6}$ serves as the electrolyte$\mathrm{CO}$ and $\mathrm{CO}_{2}$ are produced in this process$\mathrm{Al}_{2} \mathrm{O}_{3}$ is mixed with $\mathrm{CaF}_{2}$ which lowers the melting point of the mixture and brings conductivityCorrect Option: , 2 Solution:...
Read More →Solve this following
Question: Given : $\mathrm{X} \mathrm{Na}_{2} \mathrm{HAsO}_{3}+\mathrm{Y} \mathrm{NaBrO}+2 \mathrm{ZCl} \rightarrow \mathrm{NaBr}$ $+\mathrm{H}_{3} \mathrm{AsO}_{4}+\mathrm{NaCl}$ The values of $\mathrm{X}, \mathrm{Y}$ and $\mathrm{Z}$ in the above redox reaction are respectively :$2,1,3$$3,1,6$$2,1,2$$3,1,4$Correct Option: , 2 Solution: Solution Not Required...
Read More →The form of iron obtained from blast furnace is :
Question: The form of iron obtained from blast furnace is :SteelWrought IronCast IronPig ironCorrect Option: , 4 Solution: Pig iron is obtained from blast furnace . Which is impurest form of iron....
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