CBSE Additional Practice Paper 2024 Class 10 Science: Download PDF
CBSE Practice Paper 2023 – 2024 Class 10 Science also known as Additional Practice Questions has recently published in official website. Here we have given direct download link for CBSE Practice Paper 2024 Class 10 Science. Beside this Additional Practice Paper we have also updated important link for Board Exam Aspirants held on 2024.
Science
Class X
2023–24
Section A
1) A single displacement reaction is represented below.
PQ + R —-> PR + Q
Which of the following is true about the reactants and products?
Option | Type of ion of R in product | Stability of PR as compared to PQ |
A | cation | more stable |
B | cation | less stable |
C | anion | more stable |
D | anion | less stable |
(a) A
(b) B
(c) C
(d) D
Answer: (c) C
2) Some types of chemical reactions are listed below.
- decomposition
- combination
- displacement
- double displacement
Which two of the following chemical reactions are of the SAME type?
- P) AgNO3 + NaClàAgCl + NaNO3
- Q) Mg + 2 HClà MgCl2 + H2
- R) CH4 + 2 O2àCO2 + 2 H2O
- S) 2 KOH + H2SO4à K2SO4 + H2O
(a) P and Q
(b) Q and R
(c) R and S
(d) P and S
Answer: (d) P and S
3) Neetu has two test tubes containing dilute hydrochloric acid and dilute sodium hydroxide solution, but they are not labeled.
Adding which of the following solutions to the test tubes will help her visually identify the acidic and basic solution?
(a) only vinegar
(b) only baking soda
(c) only sodium chloride
(d) either vinegar or sodium chloride
Answer: (b) only baking soda
4) Sonia has aqueous solutions of three salts, sodium acetate, sodium chloride and ammonium chloride in three test tubes. The test tubes are not labeled. On checking, she finds the pH of the solutions to be 4.6, 7.0 and 8.9.
Which of the following correctly matches the salts with their respective pH?
pH 4.6 | pH 7.0 | pH 8.9 | |
A | sodium acetate | sodium chloride | ammonium chloride |
B | sodium chloride | ammonium chloride | sodium acetate |
C | ammonium chloride | sodium acetate | sodium chloride |
D | ammonium chloride | sodium chloride | sodium acetate |
(a) A
(b) B
(c) C
(d) D
Answer: (d) D
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