The major product obtained in the following reaction is
Question: The major product obtained in the following reaction is Correct Option: , 4 Solution:...
Read More →The correct statement about
Question: The correct statement about $\mathrm{ICl}_{5}$ and $\mathrm{ICl}_{4}^{-}$is$\mathrm{ICl}_{5}$ is trigonal bipyramidal and $\mathrm{ICl}_{4}^{-}$is tetrahedral.$\mathrm{ICl}_{5}$ is square pyramidal and $\mathrm{ICl}_{4}^{-}$is tetrahedral.$\mathrm{ICl}_{5}$ is square pyramidal and $\mathrm{ICl}_{4}^{-}$is square planar.Both are isostructural.Correct Option: , 3 Solution:...
Read More →Solve this following
Question: $\wedge_{\mathrm{m}}^{\circ}$ for $\mathrm{NaCl}, \mathrm{HCl}$ and $\mathrm{NaA}$ are $126.4,425.9$ and $100.5 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1}$, respectively. If the conductivity of $0.001 \mathrm{M} \mathrm{HA}$ is $5 \times 10^{-5} \mathrm{~S} \mathrm{~cm}^{-1}$, degree of dissociation of $\mathrm{HA}$ is :$0.75$$0.125$$0.25$$0.50$Correct Option: , 2 Solution:...
Read More →Which of the following compounds will show
Question: Which of the following compounds will show the maximum enol content?$\mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{COCH}_{3}$$\mathrm{CH}_{3} \mathrm{COCH}_{3}$$\mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{CONH}_{2}$$\mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{COOC}_{2} \mathrm{H}_{5}$Correct Option: 1 Solution: Solution Due to intramolecular H-bonding and resonance stabilisation enol content is maximum...
Read More →Solve this following
Question: An open vessel at $27^{\circ} \mathrm{C}$ is heated until two fifth of the air (assumed as an ideal gas) in it has escaped from the vessel. Assuming that the volume of the vessel remains constant, the temperature at which the vessel has been heated is:$750^{\circ} \mathrm{C}$$500^{\circ} \mathrm{C}$$750 \mathrm{~K}$$500 \mathrm{~K}$Correct Option: , 4 Solution:...
Read More →For a reaction scheme
Question: For a reaction scheme $\mathrm{A} \stackrel{\mathrm{k}_{1}}{\longrightarrow} \mathrm{B} \stackrel{\mathrm{k}_{2}}{\longrightarrow} \mathrm{C}$, if the rate of formation of B is set to be zero then the concentration of $B$ is given by : $\left(\frac{\mathrm{k}_{1}}{\mathrm{k}_{2}}\right)[\mathrm{A}]$$\left(\mathrm{k}_{1}+\mathrm{k}_{2}\right)[\mathrm{A}]$$\mathrm{k}_{1} \mathrm{k}_{2}[\mathrm{~A}]$$\left(\mathrm{k}_{1}-\mathrm{k}_{2}\right)[\mathrm{A}]$Correct Option: 1 Solution:...
Read More →Solve this following
Question: Given : (i) $\mathrm{C}$ (graphite) $+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow \mathrm{CO}_{2}(\mathrm{~g})$; $\Delta \mathrm{rH}^{\circ}=\mathrm{x} \mathrm{kJ} \mathrm{mol}^{-1}$ (ii) $\mathrm{C}$ (graphite) $+\frac{1}{2} \mathrm{O}_{2}$ (g) $\rightarrow \mathrm{CO}_{2}(\mathrm{~g})$; $\Delta \mathrm{rH}^{\circ}=\mathrm{y} \mathrm{kJ} \mathrm{mol}{ }^{-1}$ (iii) $\mathrm{CO}(\mathrm{g})+\frac{1}{2} \mathrm{O}_{2}(\mathrm{~g}) \rightarrow \mathrm{CO}_{2}(\mathrm{~g})$; $\Delta \mathrm{r...
Read More →Which one of the following alkenes when treated
Question: Which one of the following alkenes when treated with HCl yields majorly an anti Markovnikov product?$\mathrm{F}_{3} \mathrm{C}-\mathrm{CH}=\mathrm{CH}_{2}$$\mathrm{Cl}-\mathrm{CH}=\mathrm{CH}_{2}$$\mathrm{CH}_{3} \mathrm{O}-\mathrm{CH}=\mathrm{CH}_{2}$$\mathrm{H}_{2} \mathrm{~N}-\mathrm{CH}=\mathrm{CH}_{2}$Correct Option: 1 Solution: Due to higher $\mathrm{e}^{-}$withdrawing nature of $\mathrm{CF}_{3}$ group. It follow anti markovnikoff product...
Read More →5 moles of an ideal gas at
Question: 5 moles of an ideal gas at $100 \mathrm{~K}$ are allowed to undergo reversible compression till its temperature becomes $200 \mathrm{~K}$. If $\mathrm{C}_{\mathrm{V}}=28 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$, calculate $\Delta \mathrm{U}$ and $\Delta \mathrm{pV}$ for this process. $\left(\mathrm{R}=8.0 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\right]$$\Delta \mathrm{U}=14 \mathrm{~kJ} ; \Delta(\mathrm{pV})=4 \mathrm{~kJ}$$\Delta \mathrm{U}=14 \mathrm{~kJ} ; \Delta(\mathrm{pV})=18 \mathrm{~kJ}...
Read More →Among the following molecules / ions,
Question: Among the following molecules / ions, $\mathrm{C}_{2}^{2-}, \mathrm{N}_{2}^{2-}, \mathrm{O}_{2}^{2-}, \mathrm{O}_{2}$ which one is diamagnetic and has the shortest bond length?$\mathrm{C}_{2}^{2-}$$\mathrm{N}_{2}^{2-}$$\mathrm{O}_{2}$$\mathrm{O}_{2}^{2-}$Correct Option: 1 Solution:...
Read More →Solve this following
Question: Molecules of benzoic acid $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOH}\right)$ dimerise in benzene. 'w' $g$ of the acid dissolved in $30 \mathrm{~g}$ of benzene shows a depression in freezing point equal to $2 \mathrm{~K}$. If the percentage association of the acid to form dimer in the solution is 80 , then $\mathrm{w}$ is : (Given that $\mathrm{K}_{\mathrm{f}}=5 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$, Molar mass of benzoic acid $=122 \mathrm{~g} \mathrm{~mol}^{-1}$ )$1.8 \...
Read More →0.27g of a long chain fatty acid was dissolved in
Question: $0.27 \mathrm{~g}$ of a long chain fatty acid was dissolved in $100 \mathrm{~cm}^{3}$ of hexane. $10 \mathrm{~mL}$ of this solution was added dropwise to the surface of water in a round watch glass. Hexane evaporates and a monolayer is formed. The distance from edge to centre of the watch glass is $10 \mathrm{~cm}$. What is the height of the monolayer? $\left[\right.$ Density of fatty acid $\left.=0.9 \mathrm{~g} \mathrm{~cm}^{-3}, \pi=3\right]$$10^{-8} \mathrm{~m}$$10^{-6} \mathrm{~m}...
Read More →The major product of the following reaction is:
Question: The major product of the following reaction is: Correct Option: , 4 Solution:...
Read More →The increasing order of the reactivity of the following
Question: The increasing order of the reactivity of the following with $\mathrm{LiAlH}_{4}$ is : $(\mathrm{A})(\mathrm{B})(\mathrm{D})(\mathrm{C})$$(\mathrm{A})(\mathrm{B})(\mathrm{C})(\mathrm{D})$$(B)(A)(D)(C)$$(\mathrm{B})(\mathrm{A})(\mathrm{C})(\mathrm{D})$Correct Option: 1 Solution:...
Read More →The calculated spin-only magnetic moments
Question: The calculated spin-only magnetic moments (BM) of the anionic and cationic species of $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]_{2}$ and $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$, respectively, are :$4.9$ and 0$2.84$ and $5.92$0 and $4.9$0 and $5.92$Correct Option: , 3 Solution: Complex is $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$...
Read More →The maximum prescribed concentration of copper in drinking water is:
Question: The maximum prescribed concentration of copper in drinking water is:$5 \mathrm{ppm}$$0.5 \mathrm{ppm}$$0.05 \mathrm{ppm}$$3 \mathrm{ppm}$Correct Option: , 4 Solution: The maximum prescribed concentration of $\mathrm{Cu}$ in drinking water is $3 \mathrm{ppm}$....
Read More →The statement that is INCORRECT about the interstitial
Question: The statement that is INCORRECT about the interstitial compounds is:They have high melting pointsThey are chemically reactiveThey have metallic conductivityThey are very hardCorrect Option: , 2 Solution: Generally interstitial compounds are chemicaly inert....
Read More →The major product obtained in the following reaction is :
Question: The major product obtained in the following reaction is : Correct Option: 1 Solution:...
Read More →The major product of the following reaction is:
Question: The major product of the following reaction is: Correct Option: , 3 Solution:...
Read More →The covalent alkaline earth metal halide
Question: The covalent alkaline earth metal halide $(\mathrm{X}=\mathrm{Cl}, \mathrm{Br}, \mathrm{I})$ is :$\mathrm{CaX}_{2}$$\mathrm{SrX}_{2}$$\mathrm{BeX}_{2}$$\mathrm{MgX}_{2}$Correct Option: , 3 Solution: All halides of Be are predominantly covalent in nature....
Read More →The upper stratosphere consisting of the ozone layer protects us from the sun's radiation that falls in the wavelength region of :
Question: The upper stratosphere consisting of the ozone layer protects us from the sun's radiation that falls in the wavelength region of : $600-750 \mathrm{~nm}$$0.8-1.5 \mathrm{~nm}$$400-550 \mathrm{~nm}$$200-315 \mathrm{~nm}$Correct Option: , 4 Solution: Ozone protects most of the medium freequnecies ultravoilet light from $200-315$ $\mathrm{nm}$ wave length....
Read More →The compound that inhibits the growth of tumors is:
Question: The compound that inhibits the growth of tumors is:cis- $\left[\mathrm{Pd}(\mathrm{Cl})_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$cis- $\left[\mathrm{Pt}(\mathrm{Cl})_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$trans-[Pt(Cl $\left.)_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$trans- $\left[\mathrm{Pd}(\mathrm{Cl})_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$Correct Option: , 2 Solution: cis- $\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$ is used in chemotherapy to inhib...
Read More →The IUPAC symbol for the element with atomic number 119 would be :
Question: The IUPAC symbol for the element with atomic number 119 would be :unhuununeuueCorrect Option: , 4 Solution:...
Read More →The compound that is NOT a common component of photochemical smog is :
Question: The compound that is NOT a common component of photochemical smog is : $\mathrm{O}_{3}$$\mathrm{CH}_{2}=\mathrm{CHCHO}$$\mathrm{CF}_{2} \mathrm{Cl}_{2}$Correct Option: , 3 Solution: Freons (CFC's) are not common components of photo chemical smog....
Read More →The compound that is NOT a common component of photochemical smog is :
Question: The compound that is NOT a common component of photochemical smog is : $\mathrm{O}_{3}$$\mathrm{CH}_{2}=\mathrm{CHCHO}$$\mathrm{CF}_{2} \mathrm{Cl}_{2}$Correct Option: , 3 Solution: Freons (CFC's) are not common components of photo chemical smog....
Read More →