General Knowledge - General Science

Exercise : General Science - Elements and Metals
36.
Which of the following was to be discovered first in the chromospheres of the sun?
Krypton
Xenon
Neon
Helium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
Which of the following is in liquid form at room temperature?
Lithium
Sodium
Francium
Cerium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

38.
Sodium metal is kept under
petrol
alcohol
water
kerosene
Answer: Option
Explanation:
No answer description is available. Let's discuss.

39.
Which of the following are the ingredients of gun metal?
Iron, Zinc, Titanium
Iron, tin
Iron, Brass, Tin
Copper, Tin
Answer: Option
Explanation:
No answer description is available. Let's discuss.

40.
From which mineral is radium obtained?
Rutile
Haematite
Limestone
Pitchblende
Answer: Option
Explanation:
No answer description is available. Let's discuss.