MP Police Constable 2023 Question Paper (05-Sep-2023) Shift 3

Question 1

Which of the following is incorrect?1. The main credit for classifying elements goes to Johann Wolfgang Döbereiner.2. The early development of a Periodic Table of elements was created through the arrangement of elements on the basis of their fundamental property, the atomic mass, and also on the similarity of chemical properties.Choose the correct code:

Accepted Answer

Only 1

Answer

Both 1 and 2

Answer

Only 2

Answer

Neither 1 nor 2

Question 2

The molecules of soap are sodium or potassium salts of long-chain ______ acids.

Accepted Answer

Carboxylic

Answer

Hydrochloric

Answer

Boric

Answer

Sulphuric

Question 3

Which of the following is incorrect regarding rules for writing the number of electrons in different energy levels or shells?

Accepted Answer

Electrons are accommodated in an outermost cell before the inner shells are filled in case of gases.

Answer

The maximum number of electrons present in a shell is given by the formula $2n^2$, where 'n' is the orbit number or energy level index, 1, 2, 3,....

Answer

Electrons are not accommodated in a given shell, unless the inner shells are filled.

Answer

The maximum number of electrons that can be accommodated in the outermost orbit is 8.

Question 4

The mass of aluminium is :

Accepted Answer

$27$ u ($13$ protons + $14$ neutrons)

Answer

$27$ u ($12$ protons + $15$ neutrons)

Answer

$27$ u ($14$ protons + $13$ neutrons)

Answer

$27$ u ($11$ protons + $16$ neutrons)

Question 5

Which one of the following is not metalloid?

Accepted Answer

Se

Answer

B

Answer

As

Answer

Te

MP Police Constable 2023 Question Paper (05-Sep-2023) Shift 3

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