The average human body contains about _______ gram of Sodium Chloride.
(A) 190
(B) 210
(C) 230
(D) 250
Submitted by :- Muhammad Nawaz
Each day human body breathe in _______ liters of air.
(A) 5,000 to 10,000
(B) 10,000 to 15,000
(C) 15,000 to 20,000
(D) 20,000 to 25,000
Submitted by :- Muhammad Nawaz
The chemical name of chalk is
(A) Sodium nitrate
(B) Zinc sulfate
(C) Sulphuric acid
(D) Calcium carbonate
Submitted by :- Muhammad Nawaz
Poisonous gas present in the exhaust fumes of a jet plane is__________?
A. Fluorocarbon
B. Carbon monoxide
C. Methane
D. C2H2
Submitted by :- Jamil Ahmed
The formula C6H5-CO-CH3 represents_______ ?
A. Acetone
B. Acetic acid
C. Acetophenone
D. Phenyl acetate
Submitted by :- Jamil Ahmed
When gas is ionized, ________ forms.
(A) Molecule
(B) Element
(C) Plasma
(D) Current
Submitted by :- Muhammad Nawaz
A substance is analyzed and found to have an empirical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?
Which from the following is NOT true about Helium gas?
(A) Colorless
(B) Odorless
(C) Tasteless
(D) Toxic
Submitted by :- Muhammad Nawaz