11th Standard Syllabus & Materials

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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A

11th Standard English Medium Chemistry Subject Basic Concepts of Chemistry and Chemical Calculations Book Back 5 Mark Questions with Solution Part -

Published on: 07/06/2021

QB365 provides detailed and simple solution for every Book back Questions in class 11 Chemistry Subject. It will helps to get more idea about question pattern in every book back questions with solution.

Download Tamil Nadu 11th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 11th Standard - Chemistry

chapter: - Book back Questions

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Questions:

Multiple Choice Question

4 x 1 = 4

When 22.4 litres of H₂(g) is mixed with 11.2 litres of Cl₂(g), each at 273 K at 1 atm the moles of HCl (g), formed is equal to ______.

(a)

2 moles of HCl (g)

(b)

0.5 moles of HCl (g)

(c)

1.5 moles of HCl (g)

(d)

1 moles of HCl (g)

1 g of an impure sample of magnesium carbonate (containing no thermally decomposable impurities) on complete thermal decomposition gave 0.44 g of carbon dioxide gas. The percentage of impurity in the sample is ______________.

(a)

(b)

4.4%

(c)

16%

(d)

8.4%

The equivalent mass of a trivalent metal element is 9 g eq^-1 the molar mass of its anhydrous oxide is _____.

(a)

102 g

(b)

27 g

(c)

270 g

(d)

78 g

40 ml of methane is completely burnt using 80 ml of oxygen at room temperature The volume of gas left after cooling to room temperature is _______.

(a)

40 ml CO₂ gas

(b)

40 ml CO₂ gas and 80 ml H₂O gas

(c)

60 ml CO₂ gas and 60 ml H₂O gas

(d)

120 ml CO₂ gas

Assertion and reason

1 x 2 = 2

Assertion: Two mole of glucose contains 12.044 x 10²³ molecules of glucose
Reason: Total number of entities present in one mole of any substance is equal to 6.02 x 10²²
(a) both assertion and reason are true and the reason is the correct explanation of assertion
(b) both assertion and reason are true but reason is not the correct explanation of assertion
(c) assertion is true but reason is false
(d) both assertion and reason are false

(a)

both assertion and reason are true and the reason is the correct explanation of assertion

(b)

both assertion and reason are true but the reason is not the correct explanation of assertion

(c)

an assertion is true but reason is false

(d)

both assertion and reason are false