The first artificial disintegration of an atomic nucleus was achieved by

• Geiger

• Wilson

• Madam Curie

• Rutherford

Irrespective of the source, pure sample of water always yields 88.89% mass of oxygen and 11.11 % mass of hydrogen. This is explained by the law of; 

• conservation of mass

• constant composition

• multiple proportion

• Gay-Lussa

When the product of pressure and volume is plotted against pressure for a given amount of gas, the line obtained is :

• parallel to X-axis

• parallel to Y-axis

• linear with positive slope

• linear with negative slope

32g of O₂, 2g of H₂ and 28g of N₂ at STP, occupy separately a volume of:

• 1L

• 2L

• 22.4L

• 2.24L

Air at sea level is dense. This is a practical implimentation of :

• Boyle's law

• Charles' law

• Avogadro's law

• Dalton's law

Acetylene molecule has carbon in:

• sp -hybridization

• sp² -hybridization

• sp³ -hybridization

• sp³d -hybridization

Oxygen molecule contains :

• no unpaired electron

• one unpaired electron

• two unpaired electrons

• three unpaired electrons

The law of thermodynamics formulated by Dr.N. Nernst is :

• first law of thermodynamics

• second law of thermodynamics

• third law of thermodynamics

• both (a) and (b)

Which of the following will favour the reverse reaction in a chemical equilibrium ?

• Increasing the concentration of the reactants

• Removal of at least one of the products at regular intervals

• Increasing the concentration of one or more of the products

• Increasing the pressure

K_p and K_c are related as :

• K_p = K_c(RT)^Δn

• K_p + K_c = (RT)^Δn

• K_c= K_p

• K_p .K_c= (RT)^Δn