Ncert Solutions Chemistry Class 11th

Using the rules for significant figures, the correct answer for the expression $\frac{0.02858*0.112}{0.5702}$ $\frac{}{}$ will be

50 mL of 0.1 M CH₃COOH is being titrated against 0.1 M NaOH. When 25 mL of NaOH has been added, the pH of the solution will be_________* 10^-2. (Nearest integer)

(Given : pKa (CH₃-COOH) = 4.76)

log 2 = 0.30

log 3 = 0.48

log 5 = 0.69

log 7 = 0.84

log 11 = 1.04

13.26. Assertion: Out of staggered and the eclipsed conformations of ethane, staggered conformation is more stable. 

Reason: Hydrogen atoms are farthest apart in staggered conformation.

13.20. How would you convert the following compounds into benzene?
(i) Ethyne (ii) Ethene (iii) Hexane.

13.4. Write IUPAC names of the products obtained by the ozonolysis of the following compounds:
(i) Pent-2-ene (ii) 3, 4-Dimethylhept-3-ene (iii) 2-Ethylbut-l-ene (iv) 1-Phenylbut-l-ene.

14.3. Ozone depletion is mainly due to

14.2. BOD is a measure of

14.1. Which acid is most abundant in acid rain?

14.5 Assertion: It is important to maintain the ozone shield ozone (O₃).

Reason: O₃ protects us from the harmful ultraviolet (UV) radiations coming from the sun.

14.5 Assertion: It is important to maintain the ozone shield ozone (O₃).

Reason: O₃ protects us from the harmful ultraviolet (UV) radiations coming from the sun.