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RRB JE 2019 | Day 42 | Chemistry Quiz 8

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Question 1

When a helium atom loses an electron it becomes

Question 2

The value of Avogadro Number is

Question 3

The mass number of a nucleus is

Question 4

The orientation of an atomic orbital is governed by

Question 5

Acids turn_____ litmus paper to _____.

Question 6

The molecules of different compounds in which the total number of atoms and electrons is same are known as?

Question 7

Alpha particles are positively charged helium nuclei which have…………… unit charge and …………mass.

Question 8

What is the meaning of word “Aufbau” in Aufbau’s Principle?

Question 9

Atomic number of which of the following elements is greater than that of Silicon________

Question 10

The electronic configuration of an atom having atomic number ‘20’ is
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Dec 9ESE & GATE EC