Chemistry

The sequence of zones in the rotary kiln are as____________________?

Options:

• A. dry zone burning zone decomposition zone cooling zone
• B. cooling zone burning zone decomposition zone dry zone
• C. burning zone cooling zone decomposition zone
• D. dry zone decomposition zone burning zone cooling zone

View Answer

D. dry zone decomposition zone burning zone cooling zone

When the reaction completes in more than one steps rate of reaction will be determined by________________?

Options:

• A. Fast step
• B. Slowest step
• C. All steps
• D. Molecularity of the reaction

View Answer

B. Slowest step

A catalyst can not effect__________________?

Options:

• A. Products
• B. Chemical equilibrium
• C. Reactants
• D. both A & B

View Answer

D. both A & B

In an electrolytic cell current flows ?

Options:

• A. From cathode to anode in outer circuit
• B. From anode to cathode outside the cell
• C. From cathode to anode inside the cell
• D. both B & C

View Answer

B. From anode to cathode outside the cell

The strength of solution of an element whose electrode potential is to be measured is________________?

Options:

• A. 2M
• B. 1N
• C. 1m
• D. 1M

View Answer

D. 1M

Electrode potential of Zn is__________________?

Options:

• A. oxidation
• B. reduction
• C. oxidation-reduction
• D. depends on the nature of the coupled electrode

View Answer

D. depends on the nature of the coupled electrode

The oxidation state of transition elements is usually _______________________?

Options:

• A. variable
• B. constant
• C. single
• D. infinite

View Answer

A. variable

The species which donate two electron pairs in a coordination compound is called__________________?

Options:

• A. ligand
• B. mono-dentate ligand
• C. poly-dentate ligand
• D. bi-dentate ligand

View Answer

D. bi-dentate ligand

Saponification is the hydrolysis of fat or oil with an__________________?

Options:

• A. Acid
• B. Alkali
• C. Enzyme and alkali
• D. Enzyme and acid

View Answer

B. Alkali

Enzynies that catalyze the transfer of groups within molecule are called_________________?

Options:

• A. Isomerases
• B. Lyases
• C. Transferases
• D. Ligases

View Answer

A. Isomerases