Virtual Labs

Q1. The aqueous solution of which of the following compounds is the best conductor of electric current?

a: Acetic acid Explanation

Explanation

b: Hydrochloric acid Explanation

Explanation

c: Ammonia Explanation

Explanation

d: Fructose Explanation

Explanation

Q2. Which of the following is not an example of an oxidizing agent?

a: Hydrogen peroxide Explanation

Explanation

b: Potassium dichromate Explanation

Explanation

c: Nitric acid Explanation

Explanation

d: Hydrogen sulphide Explanation

Explanation

Q3. Which of the following substances can act as both oxidising and reducing agent?

a: KMnO₄ Explanation

Explanation

b: K₂ Cr₂O₇ Explanation

Explanation

c: HNO3 Explanation

Explanation

d: H₂O₂ Explanation

Explanation

Q4. Electrolytes conduct electric current?

a: by the movement of ions Explanation

Explanation

b: by the movement of atoms Explanation

Explanation

c: by the movement of molecules Explanation

Explanation

d: by the movement of electrons from the cathode to anode Explanation

Explanation

Q5. An electrochemical cell generally consists of a cathode and an anode. Which of the following statements is correct with respect to the cathode?

a: Oxidation occurs at the cathode Explanation

Explanation

b: Electrons move into the cathode Explanation

Explanation

c: Usually denoted by a negative sign Explanation

Explanation

d: Is usually made up of insulating material Explanation

Explanation

Q6. Which of the following is not a type of electrochemical cell?

a: Oxidation occurs at the cathode Explanation

Explanation

b: Electrons move into the cathode Explanation

Explanation

c: Usually denoted by a negative sign Explanation

Explanation

d: Is usually made up of insulating material Explanation

Explanation

Q7. Which of the following is not a generally used electrolyte in the salt bridges used to connect the two half-cells of an electrochemical cell?

a: NaCl Explanation

Explanation

b: KNO₃ Explanation

Explanation

c: KCl Explanation

Explanation

d: ZnSO₄ Explanation

Explanation

Q8.The reductant may be defined as a substance, whose oxidation no of the atom?

a: increases Explanation

Explanation

b: decreases Explanation

Explanation

c: remains constant Explanation

Explanation

d: may increases or decreases Explanation

Explanation

Q9.The chemical NaOH which is used in the manufacture of soaps, detergents, papers etc. is prepared by the electric current in?

a: aqueous NaCl Explanation

Explanation

b: molten NaCl Explanation

Explanation

c: H₂O Explanation

Explanation

d: aqueous KCI Explanation

Explanation

Q10. Which of the following is not a good conductor?

a: Cu Explanation

Explanation

b: NaCl (aq) Explanation

Explanation

c: NaCl (molten) Explanation

Explanation

d: NaCl(s) Explanation

Explanation

Electrolytic Concentration Cell.