Quiz Mixture

Pressure has the same dimension as ____________

• energy per unit volume

• force per unit volume

• Energy

• Force

• Forced Energy

Which of the following is the most electronegative element in the periodic table?

• Hydrogen

• Oxygen

• Fluorine

• Chlorine

• Helium

Which branch of chemistry deals with the study of carbon and its compounds?

• Inorganic chemistry

• Organic Chemistry

• Analytical Chemistry

• Biochemistry

The coldest region of the atmosphere

• Mesosphere

• Troposphere

• Thermosphere

• Stratosphere

Rusting of iron involves a chemical reaction which is a combination of

• Reduction as well as combination reactions

• Oxidation as well as combination reactions

• Reduction as well as displacement reactions

• Oxidation as well as displacement reactions

Half-life of 10g of radioactive substance is 10 days. The half-life of 20 g is

• 10 days

• 5 days

• 20 days

• 40 days

In which state of matter are the particles mostly touching but arranged in a random way?

• Solid

• Liquid

• Gas

• Gaseous Nitrogen

Chemical kinetics, a branch of physical chemistry, deals with:

Hint

Define the term chemical kinetics.

• Rate of reactions

• heat changes in a reaction

• Structures of molecules

• physical changes in a reaction

Which of the following statement is incorrect for a chemical reaction?

Hint-State and explain the characteristics of chemical reactions-L1(6-8), ICSE 7, Selina 2018,pg#63-65

• Heat may be given out but never absorbed.

• Sound may be produced.

• A colour change may take place.

• A gas may be evolved.

Which of the following is the formula for propane?

• C3H6

• C3H8

• C3H10

• C3H18