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DPP - 01 - Mole Concept

This document contains daily practice problems for Class XI students targeting the IIT JEE 2027 exam, focusing on physical chemistry concepts. It includes questions related to neutrons, moles, electrons, and molecular mass calculations. The problems are designed to enhance students' understanding and application of physical chemistry principles.

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13 views1 page

DPP - 01 - Mole Concept

This document contains daily practice problems for Class XI students targeting the IIT JEE 2027 exam, focusing on physical chemistry concepts. It includes questions related to neutrons, moles, electrons, and molecular mass calculations. The problems are designed to enhance students' understanding and application of physical chemistry principles.

Uploaded by

4k94896w48
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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PHYSICAL CHEMISTRY

Daily Practice Problems


Target IIT JEE-2027
CLASS : XI TIME : 35 MIN. DPP.NO.1

31
1. The number of neutrons present 124 amu of P4 is (Given : 15 P )

(A) 16 (B) 16NA (C) 64 NA (D) 64

2. 10 mole of CO2 contains


(A) 220 electrons (B) 440 mol protons
(C) 220 mol neutrons (D) 220 × 6.02 × 1023 nucleons

37
3. No. of neutrons in 74 g of 17 Cl is :

(A) 2 × NA (B) 34 × NA (C) 40 × NA (D) 34

4. The number of moles of electrons in 4.2 g of N3– ion (nitride ion) is


(A) 0.3 (B) 2.1 (C) 3 (D) 0.9

5. No. of electrons in 11.5 g Na+ is


(A) 5.5 × NA (B) 5 NA (C) 11 NA (D) None of these

6. Which of the following contains highest number of oxygen atoms ?


(A) 2 g of O (B) 2 g of O2
(C) 2 g of O3 (D) all have the same number of atoms

7. The mass of an electron is 9.11 × 10–31 kg. Molar mass of electron is :


(A) 1.5 × 10–31 g mol–1 (B) 5.5 × 10–4 g mol–1
(C) 5.5 × 10–10 g mol–1 (D) 9.11 × 10–28 g mol–1

8. Number of moles in 1.8 g H2O is equal to number of moles in


(I) 18 g glucose (C6H12O6) (II) 6 g urea (NH2CONH2) (III) 34.2 g sucrose (C12H22O11)
(A) I, II, III (B) I, II (C) I, III (D) II, III

9. In 37
(I) 17 14CO molecule
Cl atom (II) 2 (III) water (H2O) molecule

Calculate :
(i) Number of electrons (ii) Number of protons (iii) Number of neutrons (iv) Number of nucleons

10. Calculate the mass of one molecule/formula (in amu) of the following species :
(i) CO2 (ii) H2SO4 (iii) CuSO4 . 5H2O (iv) KMnO4
(v) CaCO3 (vi) C6H6 (vii) KClO3 (viii) FeSO4.(NH4)2SO4.6H2O

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