The most densest substance on the Earth is _____.
A. Platinum
B. Copper
C. Steel
D. Osmium
A. Platinum
B. Copper
C. Steel
D. Osmium
A. night blindness
B. rickets
C. scurvy
D. hair fall
A. 5,000 to 10,000
B. 10,000 to 15,000
C. 15,000 to 20,000
D. 20,000 to 25,000
A. Oxygen
B. Hydrogen
C. Carbon Dioxide
D. Silicon
A. Oxygen
B. Hydrogen
C. Carbon Dioxide
D. Silicon