Which of the following noble gases is abundant in air?

A. Neon
B. Helium
C. Argon
D. Methane

Which law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules?

A. Boyle’s law
B. Charles’ law
C. Gay-lussac’s law
D. Avogadro’s law

Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature?

A. Charles’ law
B. Avogadro’s law
C. Graham’s law
D. Boyle’s law

The easy way of balancing the chemical equation is_________?

A. According to atom’s atomic number.
B. According to atom’s atomic mass.
C. First we balance metal than non-metal than hydrogen than oxygen.
D. None of the above

Which one of the following is also known as lactic acid ?

A. 3-hydroxy propanoic acid
B. 2-hydroxy propanoic acid
C. 2-hydroxy butanoic acid
D. 3-hydroxy butanoic acid

The given dissociation constant (Ka) value 1.3×10-10 is of_________________?

A. Alcohol
B. Acetic acid
C. Water
D. Phenol

When phenol is heated with concentrated nitric acid the product is________________?

A. Picric acid
B. O-nitrophenol
C. 1 3 5 -trinitro benzene
D. P-nitrophenol

Which compound shows hydrogen bonding ?

A. C2h6
B. C2h5cl
C. Ch3och3
D. C2h5oh

Methyl alcohol is not used__________________?

A. As a solvent
B. As an antifreezing agent
C. As a substitute for petrol
D. For denaturing of ethyl alcohol

An alcohol which can be prepared by fermentation is_________________?

A. Ch3oh
B. C3h7oh
C. Ch3 – ch2 – oh
D. C6h5oh