MEDIUM
NDA & NA EE
IMPORTANT
Earn 100

Let there be an object having some chemicals in it. It starts moving with a uniform velocity v and a chemical reaction starts happening. In this case, which of the following statement(s) is/are correct?

1. Chemical reactions happening in the system cannot change the velocity v of the centre of mass of the object.

2. Chemical reactions happening in the system cannot change the kinetic energy of the particles inside concerning the centre of mass of the object.

Select the correct answer using the code given below:

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Important Questions on Physical and Chemical Changes

EASY
NDA & NA EE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - Physical and Chemical Changes>NDA & NA EE 2019 Paper 1 General Ability Test>Q 2
Which one of the following energy is stored in the links between the atoms?
EASY
NDA & NA EE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - Physical and Chemical Changes>NDA & NA EE 2019 Paper 1 General Ability Test>Q 3
Which one of the following metals does not react with cold water?
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NDA & NA EE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - Physical and Chemical Changes>NDA & NA EE 2019 Paper 1 General Ability Test>Q 4
Which one of the following could be the melting point of iron?
EASY
NDA & NA EE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - Physical and Chemical Changes>NDA & NA EE 2019 Paper 1 General Ability Test>Q 5
On exposure to moist air, copper gains a green coat on its surface due to the formation of which one of the following compounds?
EASY
NDA & NA EE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - Physical and Chemical Changes>NDA & NA EE 2019 Paper 1 General Ability Test>Q 6
Which one of the following will not produce carbon dioxide on reacting with an aqueous solution of hydrochloric acid?