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Here we provide detailed text solution for JEE- Main previous years questions. And we provide video explanation for each and every question separately.
Question & Answers
Here we provide detailed text solution for JEE Previous Years Solutions. And we provide video explanation for each and every question separately.
Chemistry
Q. If the solubility product of AB2 is 3.20 × 10-11 M3, then the solubility of AB2 in pure water is..... × 10-4 mol L-1 [Assuming that neither kind of ion reacts with water].
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Chemistry
Q. The compound that cannot act both as oxidising and reducing agent is:
(A). H2SO3
(B). HNO2
(C). H3PO4
(D). H2O2
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Chemistry
Q. The redox reaction among the following is:
(A). formation of ozone from atmospheric oxygen in the presence of sunlight
(B). reaction of H2SO4 with NaOH
(C). combination of dinitrogen with dioxygen at 2000 K
(D). Reaction of [Co(H2O)6]Cl3 withAgNO3
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Chemistry
Q. Match the type of interaction in column A with the distance dependence of their interaction energy in column B:
A B
(I) ion-ion (a) 1/r
(II) dipole-dipole (b) 1/r2
(III) London dispersion (c) 1/r3
(d) 1/r6
(A) (I)-(a), (II)-(b), (III)-(d) (B) (I)-(a), (II)-(b), (III)-(c)
(C) (I)-(b), (II)-(d), (III)-(c) (D) (I)-(a), (II)-(c), (III)-(d)
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Chemistry
Q. Amongst the following statements, that which was not proposed by Dalton was:
(A) matter consists of indivisible atoms
(B) when gases combine or reproduced in a chemical reaction they do so in a simple ratio by volume provided all gases are at the same T & P.
(C) Chemical reactions involve reorganisation of atoms. These are neither created nor destroyed in a chemical reaction.
(D) all the atoms of a given element have identical properties including identical mass. Atoms of different elements differ in mass.
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Chemistry
Q. A mixture of one mole each of H2, He and O2 each are enclosed in a cylinder of volume V at temperature T. If the partial pressure of H2 is 2 atm, the total pressure of the gases in the cylinder is:
(A) 6 atm (B) 14 atm (C) 38 atm (D) 22 atm
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