Chemistry

Which of the following gases contains the least number of atoms at s.t.p?

A. 1 mole of butane B. 4 moles of chlorine C. 3 moles of ozone D. 7 moles of argon…

6 years ago

The IUPAC nomenclature of the compound H3C – CH(CH3) – CH(CH3) – CH2 – CH3 is?

H3C - CH(CH3) - CH(CH3) - CH2 - CH3 A. 3,4- dimethylhexane B. 2,3- dimethyl pentane C. 2- ethyl hexane…

6 years ago

In the reaction: M + N → P ΔH = +Q kJ Which of the following would increase the concentration of the product?

A. Adding a suitable catalyst B. Increasing the concentration of P C. Increasing the temperature D. Decreasing the temperature Correct…

6 years ago

Sulphur exists in six forms in the solid-state. This property is known as?

A. Isomerism B. Allotropy C. Isotopy D. Isomorphism Correct Answer: Option B B. Allotropy

6 years ago

Which of the following is a physical change?

A. Exposing white phosphorus to air B. Burning kerosene C. Dissolving calcium in water D. Freezing ice cream Correct Answer:…

6 years ago

Which of the following pairs cannot be represented with a chemical formula?

A. air and bronze B. bronze and sodium chloride C. copper and sodium chloride D. caustic soda and washing soda…

6 years ago

Which of the following describes the chemical property of acids?

A. None of the above B. Acid + XCO3 → Salt + H2O + NH3 C. Acid + NaOH →…

6 years ago

Which of the following pollutants will lead to the depletion of ozone layer?

A. chlorofluorocarbon B. carbon (ii) oxide C. hydrogen sulphide D. sulphur (iv) oxide Correct Answer: Option A A. chlorofluorocarbon

6 years ago

Which two gases can be used for the demonstration of the fountain experiment?

A. SO3 and NH3 B. SO2 and NH3 C. HCl and NH3 D. SO2 and HCl Correct Answer: Option D…

6 years ago