The product formed in the reaction of cumene
Question: The product formed in the reaction of cumene with $\mathrm{O}_{2}$ followed by treatment with dil. HCl are :Correct Option: , 3 Solution:...
Read More →Which compound(s) out of the following
Question: Which compound(s) out of the following is/are not aromatic ? $\mathrm{C}$ and D$\mathrm{B}, \mathrm{C}$ and $\mathrm{D}$$\mathrm{A}$ and $\mathrm{C}$$\mathrm{B}$Correct Option: , 2 Solution:...
Read More →Among the following compound which one is found in RNA?
Question: Among the following compound which one is found in RNA?Correct Option: , 3 Solution:...
Read More →The major product of the following reaction is:
Question: The major product of the following reaction is: Correct Option: , 2 Solution:...
Read More →An organic compound is estimated through Dumus
Question: An organic compound is estimated through Dumus method and was found to evolve 6 moles of $\mathrm{CO}_{2}$. 4 moles of $\mathrm{H}_{2} \mathrm{O}$ and 1 mole of nitrogen gas. The formula of the compound is :$\mathrm{C}_{12} \mathrm{H}_{8} \mathrm{~N}$$\mathrm{C}_{12} \mathrm{H}_{8} \mathrm{~N}_{2}$$\mathrm{C}_{6} \mathrm{H}_{8} \mathrm{~N}$$\mathrm{C}_{6} \mathrm{H}_{8} \mathrm{~N}_{2}$Correct Option: , 4 Solution:...
Read More →Homoleptic octahedral complexes of a metal ion '
Question: Homoleptic octahedral complexes of a metal ion ' $\mathrm{M}^{3+}$ ' with three monodentate ligands and $\mathrm{L}_{1}, \mathrm{~L}_{2}, \mathrm{~L}_{3}$ absorb wavelengths in the region of green, blue and red respectively. The increasing order of the ligand strength is :$\mathrm{L}_{2}\mathrm{L}_{1}\mathrm{L}_{3}$$\mathrm{L}_{3}\mathrm{L}_{2}\mathrm{L}_{1}$$\mathrm{L}_{3}\mathrm{L}_{1}\mathrm{L}_{2}$$\mathrm{L}_{1}\mathrm{L}_{2}\mathrm{L}_{3}$Correct Option: , 3 Solution: Order of $\...
Read More →The element that usually does not show variable oxidation states is :
Question: The element that usually does not show variable oxidation states is :$\mathrm{V}$$\mathrm{Ti}$$\mathrm{Sc}$$\mathrm{Cu}$Correct Option: , 3 Solution:...
Read More →Which of the following conditions in drinking water causes methemoglobinemia?
Question: Which of the following conditions in drinking water causes methemoglobinemia?$50$ ppm of load$100$ ppm of sulphate$50 \mathrm{ppm}$ of chloride$50$ ppm of nitrateCorrect Option: , 4 Solution: Concentration of nitrate $50 \mathrm{ppm}$ in drinking water causes methemoglobinemia...
Read More →The major poduct of the following reaction is:
Question: The major poduct of the following reaction is: Correct Option: 1 Solution:...
Read More →The major product obtained in the following reaction is:
Question: The major product obtained in the following reaction is: Correct Option: , 3 Solution:...
Read More →Th correct statements among (a) to (d)
Question: Th correct statements among (a) to (d) regarding $\mathrm{H}_{2}$ as a fuel are : (a) It produces less pollutant than petrol (b) A cylinder of compressed dihydrogen weighs $\sim 30$ times more than a petrol tank producing the same amount of energy (c) Dihydrogen is stored in tanks of metal alloys like $\mathrm{NaNi}_{5}$ (d) On combustion, values of energy released per gram of liquid dihydrogen and LPG are 50 and $142 \mathrm{~kJ}$, respectively$b$ and d onlya, b and c onlyb, c and d o...
Read More →The major product of the following reaction is:
Question: The major product of the following reaction is: Correct Option: , 2 Solution:...
Read More →The concentration of dissolved oxygen
Question: The concentration of dissolved oxygen (DO) in cold water can go upto :$10 \mathrm{ppm}$$14 \mathrm{ppm}$$16 \mathrm{ppm}$$8 \mathrm{ppm}$Correct Option: 1 Solution: In cold water, dissolved oxygen (DO) can reach a concentration upto $10 \mathrm{ppm}$...
Read More →If a reaction follows the Arrhenius equation,
Question: If a reaction follows the Arrhenius equation, the plot $\operatorname{lnk}$ vs $\frac{1}{(\mathrm{RT})}$ gives straight line with a gradient (-y) unit. The energy required to activate the reactant is:y unit- y unit$y R$ unit$y / R$ unitCorrect Option: 1 Solution: y unit...
Read More →The correct match between items-I and II is :
Question: The correct match between items-I and II is : A-Q, B-R, C-SA-R, B-P, C-SA-S, B-R, C-P$A-Q, B-R, C-P$Correct Option: 1 Solution:...
Read More →For the cell
Question: For the cell $\mathrm{Zn}(\mathrm{s}) \mid \mathrm{Zn}^{2+}(\mathrm{aq}) \| \mathrm{M}^{\mathrm{x}+}$ (aq) $\mid \mathrm{M}(\mathrm{s})$, different half cells and their standard electrode potentials are given below : If $\mathrm{E}_{\mathrm{Zn}^{2+} / \mathrm{Zn}}^{0}=-0.76 \mathrm{~V}$, which cathode will give a mximum value of $E_{\text {cell }}^{\circ}$ per electron transferred?$\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}$$\mathrm{Ag}^{+} / \mathrm{Ag}$$\mathrm{Au}^{3+} / \mathrm{Au}$$\math...
Read More →Solve this following
Question: At $100^{\circ} \mathrm{C}$, copper $(\mathrm{Cu})$ has $\mathrm{FCC}$ unit cell structure with cell edge length of $x \AA$. What is the approximate density of $\mathrm{Cu}\left(\right.$ in $\mathrm{g} \mathrm{cm}^{-3}$ ) at this temperature ? [Atomic Mass of Cu $=63.55 \mathrm{u}$ ]$\frac{105}{x^{3}}$$\frac{211}{x^{3}}$$\frac{205}{x^{3}}$$\frac{422}{x^{3}}$Correct Option: , 4 Solution:...
Read More →For coagulation of arscnious sulphide sol, which one of the following salt solution will be most effective ?
Question: For coagulation of arscnious sulphide sol, which one of the following salt solution will be most effective ? $\mathrm{AlCl}_{3}$$\mathrm{NaCl}$$\mathrm{BaCl}_{2}$$\mathrm{Na}_{3} \mathrm{PO}_{4}$Correct Option: 1 Solution: Sulphide is -ve charged colloid so cation with maximum charge will be most effective for coagulation. $\mathrm{Al}^{3+}\mathrm{Ba}^{2+}\mathrm{Na}^{+}$coagulating power....
Read More →The increasing basicity order of the following compounds is :
Question: The increasing basicity order of the following compounds is : (D) $(\mathrm{C})(\mathrm{A})(\mathrm{B})$$(\mathrm{A})(\mathrm{B})(\mathrm{D})(\mathrm{C})$$(A)(B)(C)(D)$$(\mathrm{D})(\mathrm{C})(\mathrm{B})(\mathrm{A})$Correct Option: 1 Solution:...
Read More →The correct match between Item I and Item II is:
Question: The correct match between Item I and Item II is: $(\mathrm{A}) \rightarrow(\mathrm{Q}) ;(\mathrm{B}) \rightarrow(\mathrm{R}) ;(\mathrm{C}) \rightarrow(\mathrm{P})$$(\mathrm{A}) \rightarrow(\mathrm{P}) ;(\mathrm{B}) \rightarrow(\mathrm{R}) ;(\mathrm{C}) \rightarrow(\mathrm{Q})$$(\mathrm{A}) \rightarrow(\mathrm{Q}) ;(\mathrm{B}) \rightarrow(\mathrm{P}) ;(\mathrm{C}) \rightarrow(\mathrm{R})$$(\mathrm{A}) \rightarrow(\mathrm{R}) ;(\mathrm{B}) \rightarrow(\mathrm{Q}) ;(\mathrm{C}) \rightarr...
Read More →Haemoglobin and gold sol are examples of:
Question: Haemoglobin and gold sol are examples of:negatively charged solspositively charged sols]negatively and positively charged sols, respectivelypositively and negatively charged sols, respectivelyCorrect Option: , 4 Solution: Haemoglobin $\longrightarrow$ positive sol $\mathrm{Ag}-$ sol $\longrightarrow$ negative sol...
Read More →For the following reaction, the mass of water produced from
Question: For the following reaction, the mass of water produced from $445 \mathrm{~g}$ of $\mathrm{C}_{57} \mathrm{H}_{110} \mathrm{O}_{6}$ is : $2 \mathrm{C}_{57} \mathrm{H}_{110} \mathrm{O}_{6}(\mathrm{~s})+163 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 114 \mathrm{CO}_{2}(\mathrm{~g})+110 \mathrm{H}_{2} \mathrm{OP}(1)$$495 \mathrm{~g}$$490 \mathrm{~g}$$890 \mathrm{~g}$$445 \mathrm{~g}$Correct Option: 1 Solution: moles of $\mathrm{C}_{57} \mathrm{H}_{110} \mathrm{O}_{6}(\mathrm{~s})=\frac{445}{8...
Read More →For an elementary chemical reaction,
Question: For an elementary chemical reaction, $2 \mathrm{k}_{1}\left[\mathrm{~A}_{2}\right]-\mathrm{k}_{-1}[\mathrm{~A}]^{2}$$\mathrm{k}_{1}\left[\mathrm{~A}_{2}\right]-\mathrm{k}_{-1}[\mathrm{~A}]^{2}$$2 \mathrm{k}_{1}\left[\mathrm{~A}_{2}\right]-2 \mathrm{k}_{-1}[\mathrm{~A}]^{2}$$\mathrm{k}_{1}\left[\mathrm{~A}_{2}\right]+\mathrm{k}_{-1}[\mathrm{~A}]^{2}$Correct Option: , 3 Solution:...
Read More →The ground state energy of hydrogen atom is
Question: The ground state energy of hydrogen atom is $-13.6 \mathrm{eV}$. The energy of second excited state $\mathrm{He}^{+}$ion in $\mathrm{eV}$ is :$-6.04$$-27.2$$-54.4$$-3.4$Correct Option: 1 Solution:...
Read More →The correct statement regarding the given Ellingham diagram is:
Question: The correct statement regarding the given Ellingham diagram is: At $800^{\circ} \mathrm{C}$, Cu can be used for the extraction of $\mathrm{Zn}$ from $\mathrm{ZnO}$At $500 \mathrm{C}$, coke can be used for the extraction of $\mathrm{Zn}$ from $\mathrm{ZnO}$Coke cannot be used for the extraction of $\mathrm{Cu}$ from $\mathrm{Ca}_{2} \mathrm{O}$.At $1400^{\circ} \mathrm{C}, \mathrm{Al}$ can be used for the extraction of $\mathrm{Zn}$ from $\mathrm{ZnO}$Correct Option: , 4 Solution: Accor...
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