EASY
9th CBSE
IMPORTANT
Earn 100

The mass of nitrogen per gram hydrogen in the compound hydrazine is exactly one and half times the mass of nitrogen in the compound ammonia. This fact illustrates the

50% studentsanswered this correctly

Important Questions on Periodic Tests

EASY
9th CBSE
IMPORTANT
Which of the following is covered by a single membrane?
EASY
9th CBSE
IMPORTANT
Outline the method used for getting pure sugar from impure sample.
MEDIUM
9th CBSE
IMPORTANT
Which tissue performs the function of linking and supporting other body tissues?
EASY
9th CBSE
IMPORTANT

What is the mass of 0.5 mole of NH3 ?

[Given atomic mass of N=14 u, atomic mass of H=1 u]

EASY
9th CBSE
IMPORTANT
Who introduced the system of scientific nomenclature of organisms?
MEDIUM
9th CBSE
IMPORTANT

In which medium, speed of sound is maximum?

(Choose from: Solid/ Liquid/ Gas)

EASY
9th CBSE
IMPORTANT
Write any two uses of SONAR.
EASY
9th CBSE
IMPORTANT
Give reasons:
A liquid flows easily.