HARD
10th Gujarat Board
IMPORTANT
Earn 100

Describe the reaction of zinc granules with dilute sulphuric acid with a diagram. Also, write the equation of zinc with sodium hydroxide.

Important Questions on Chemical Reactions and Equations

MEDIUM
10th Gujarat Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 1 - Chemical Reactions and Equations>Gujarat Board-2019>Q 1
Write the chemical equation for industrial production of dihydrogen gas and write its two uses.
MEDIUM
10th Gujarat Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 1 - Chemical Reactions and Equations>Gujarat Board-2020>Q 2

A solution of a substance "X" is used for whitewashing.

(a) Name the substance "X"

(b) Write the formula of substance "X"

(c) Write the reaction of substance "X" with water

MEDIUM
10th Gujarat Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 1 - Chemical Reactions and Equations>Gujarat Board-2018>Q 4
Which gas is used as preservative in fruit juice and jams?
EASY
10th Gujarat Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 1 - Chemical Reactions and Equations>Gujarat Board-2019>Q 5
Which gas is used as preservatives in the juice of fruits, in jam, and drying of fruits?
MEDIUM
10th Gujarat Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 1 - Chemical Reactions and Equations>Gujarat Board-2020>Q 6

ZnO+C → Zn + CO

In the above equation, reduction takes place in _____ substance.

MEDIUM
10th Gujarat Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 1 - Chemical Reactions and Equations>Gujarat Board-2020>Q 7
Give reason: "Aluminium with nitric acid does not produce hydrogen gas".