Home
Class 8
BIOLOGY
The atmosphere contains about - --% of o...

The atmosphere contains about - --% of oxygen

A

21

B

22

C

23

D

24

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • NOT FOR BREATHING NOT FOR DRINKING

    NCERT TELUGU|Exercise Improve your learning |16 Videos

  • NOT FOR DRINK NOT FOR BREATH

    NCERT TELUGU|Exercise Improve your learning|15 Videos

Similar Questions

Explore conceptually related problems

(A) Atomosphere contain 78% by volume of nitrogen (R ) Oxygen is the most abundant element in the earth crust

The atmospheric layer continues from 10 km to about 50 km is ……

0.033% of atmosphere is

The oxide of a metal contains 40% of oxygen. The valency of metal is 2. What is the atomic weight of metal?

Two gaseous samples were analysed. One contained 1.2 g of carbon and 3.2 g of oxygen. The other contained 27.3% carbon and 72.7% oxygen. The experiemental data is an accordance with

An element X forms two oxides. Formula of the first oxide is XO_(2) . The first contains 50% of oxygen. If the second oxide contains 60% oxygen, the formula of the second oxide is