Practice Questions CBSE - Science Class 10 (2023 Boards)

Question 1

down arrow in sibling posts in Teachoo

Question 2

down arrow in sibling posts in Teachoo

Question 3 Important

down arrow in sibling posts in Teachoo

Question 4 Important

down arrow in sibling posts in Teachoo

Question 5 Important

down arrow in sibling posts in Teachoo

Question 6

down arrow in sibling posts in Teachoo

Question 7 Important

down arrow in sibling posts in Teachoo

Question 8

down arrow in sibling posts in Teachoo

Question 9 Important

down arrow in sibling posts in Teachoo

Question 10

down arrow in sibling posts in Teachoo

Question 11

down arrow in sibling posts in Teachoo

Question 12 Important

down arrow in sibling posts in Teachoo

Question 13 Important

down arrow in sibling posts in Teachoo

Question 14

down arrow in sibling posts in Teachoo

Question 15 Important

down arrow in sibling posts in Teachoo

Question 16

down arrow in sibling posts in Teachoo

Question 17 [Assertion Reasoning] Important

down arrow in sibling posts in Teachoo

Question 18 [Assertion Reasoning] Important

down arrow in sibling posts in Teachoo

Question 19 [Assertion Reasoning] Important

down arrow in sibling posts in Teachoo

Question 20 [Assertion Reasoning]

down arrow in sibling posts in Teachoo

Question 21 (Choice 1) Important

down arrow in sibling posts in Teachoo

Question 21 (Choice 2)

down arrow in sibling posts in Teachoo

Question 22 Important

down arrow in sibling posts in Teachoo

Question 23

down arrow in sibling posts in Teachoo

Question 24 Important

down arrow in sibling posts in Teachoo

Question 25 (Choice 1)

down arrow in sibling posts in Teachoo

Question 25 (Choice 2)

down arrow in sibling posts in Teachoo

Question 26 Important

down arrow in sibling posts in Teachoo

Question 27

down arrow in sibling posts in Teachoo

Question 28 Important

down arrow in sibling posts in Teachoo

Question 29 (Choice 1)

down arrow in sibling posts in Teachoo

Question 29 (Choice 2) Important

down arrow in sibling posts in Teachoo

Question 30 Important

down arrow in sibling posts in Teachoo

Question 31 (a)

down arrow in sibling posts in Teachoo

Question 31 (b) Important

down arrow in sibling posts in Teachoo

Question 32 (Choice 1)

down arrow in sibling posts in Teachoo

Question 32 (Choice 2) Important

down arrow in sibling posts in Teachoo

Question 33 (a)

down arrow in sibling posts in Teachoo

Question 33 (b)

down arrow in sibling posts in Teachoo

Question 33 (c) Important

down arrow in sibling posts in Teachoo

Question 34 (a) - Choice 1

down arrow in sibling posts in Teachoo

Question 34 (b) - Choice 1 Important

down arrow in sibling posts in Teachoo

Question 34 (c) - Choice 1 left arrow to signify that you are on this page You are here

down arrow in sibling posts in Teachoo

Question 34 (a) - Choice 2 Important

down arrow in sibling posts in Teachoo

Question 34 (b) - Choice 2]

down arrow in sibling posts in Teachoo

Question 34 (c) - Choice 2 Important

down arrow in sibling posts in Teachoo

Question 35 (a) - Choice 1 Important

down arrow in sibling posts in Teachoo

Question 35 (b) - Choice 1 Important

down arrow in sibling posts in Teachoo

Question 35 (c) - Choice 1

down arrow in sibling posts in Teachoo

Question 35 (a) - Choice 2

down arrow in sibling posts in Teachoo

Question 35 (b) - Choice 2 Important

down arrow in sibling posts in Teachoo

Question 35 (c) - Choice 2

down arrow in sibling posts in Teachoo

Question 36 Important

down arrow in sibling posts in Teachoo

Question 37 (a) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 37 (b) i - Choice 2 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 37 (b) ii - Choice 2 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 38 (a) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 38 (b) - Choice 1 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 38 (c) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 39 (a) - Choice 1 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 39 (b) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 39 (c) - Choice 1 [Case Based]

down arrow in sibling posts in Teachoo

Question 39 (d) - Choice 1 [Case Based] Important

down arrow in sibling posts in Teachoo

Question 39 (d) - Choice 2 [Case Based] Important

down arrow in sibling posts in Teachoo

Prasad has a saturated alcohol X of chemical formula C 4 H 9 OH.

(c) Write the chemical formula of the product Z formed by heating Y with acidified potassium dichromate. Write the general formula for compounds in the homologous series that Z belongs to.

 

Answer:

(c)

  • We are heating Y with acidified potassium dichromate .
  • Potassium dichromate is an oxidising agent that would oxidise the alcohol to its corresponding carboxylic acid
  • Chemical formula of Z: C 5 H 11 COOH  
  • Since Z is a carboxylic acid, its general formula is given by:

C n H 2n+1 COOH OR C n H 2n O 2 .

Go Ad-free
Maninder Singh's photo - Co-founder, Teachoo

Made by

Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo