Electrolytes and non-electrolytes - class-X

electrolytes and non-electrolytes

35 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

An electrolyte:

  1. has positive charge
  2. has negative chargec
  3. should be able to conduct charge without dissociating
  4. should able to form positive and negative ions
Question 2 Multiple Choice (Single Answer)

Which of the following is an electrolyte?

  1. $AgNO _3$ solution
  2. Alcohol
  3. Mercury
  4. Sugar solution
Question 3 Multiple Choice (Single Answer)

Which of the following is not a non electrolyte?

  1. Acetic acid
  2. Glucose
  3. Ethanol
  4. Urea
Question 4 Multiple Choice (Single Answer)

Define good conductors of electricity.

  1. Compounds which do not break up from their solution on passing electric current
  2. Materials which do not allow electric current to pass through them easily
  3. Substances which allow electric current to pass through them easily
  4. Compounds which break up from their solution on passing electric current
Question 5 Multiple Choice (Single Answer)

Saturated solution of $KNO _3$ with agar-agar is used to make salt bridge because :

  1. size of $K^+$ is greater than that of $NO _3^-$
  2. velocity of $NO _3^-$ is greater than that of $K^+$
  3. Velocities of both $K^+$ and $NO _3^-$ are nearly the same
  4. both velocity and sizes of $K^+$ and $NO _3^-$ ions are same
Question 6 Multiple Choice (Single Answer)

Weak electrolyte is:

  1. $(NH _4) _2C _2O _4$
  2. $(NH _4) _2SO _4$
  3. A and B both
  4. None
Question 7 Multiple Choice (Single Answer)

At $90^oC$, $pH$ of an aq. solution of a strong electrolyte is 7. What is the nature of electrolyte? 

  1. Neutral
  2. Basic
  3. Acidic
  4. Cannot say
Question 8 Multiple Choice (Single Answer)

Maximum number of moles of oxygen gas that can be obtained by the electrolytic decomposition of 90 g of water will be 

  1. 1
  2. 2.5
  3. 5
  4. 9
Question 9 Multiple Choice (Single Answer)

Which compounds dissociate to ions, when they dissolved in water?

  1. $BaSO _4; C _2H _4, AgCl$
  2. $KOH; C _6H _6; H _2SO _4$
  3. $Ca _3(PO _4) _2AgI; Cu(NO _3) _2$
  4. $AlCl _3; KOH; O _2$
  5. $KOH; H _2SO _4; KMnO _4$
Question 10 Multiple Choice (Single Answer)

The aqueous solution of non-electrolytes contains :

  1. atoms
  2. ions
  3. electrons
  4. molecules
Question 11 Multiple Choice (Single Answer)

Which of the following is not a strong electrolytes ?

  1. $NaCl$
  2. $KNO _3$
  3. $NH _4OH$
  4. $FeSO _4$
Question 12 Multiple Choice (Single Answer)

A non-electronic conductor is :

  1. Iron
  2. Gas carbon
  3. Copper sulphate
  4. Mercury
Question 13 Multiple Choice (Single Answer)

In 0.5 M ${ NH } _{ 3 }$ solution the pH is 11.21 and the per cent dissociation of ammonia in a solution that is 0.15 M ${ NH } _{ 3 }$ and 0.45 M ${ NH } _{ 4 }Cl$ is

  1. 68%
  2. 36%
  3. $4\times { 10 }^{ -3 }%$
  4. $4\times { 10 }^{ -5 }%$
Question 14 Multiple Choice (Single Answer)

The equivalent conductance at infinite dilution of an acid like HF

  1. Can be determined by extrapolation of measurements of dilute solutions of HCI, HBr and HI
  2. Can be determined by measurement of very dilute HF solution
  3. Can best be determined from measurements of concentrated solutions of NaF, NaCI and HCI
  4. Can best be determined from measurements of dilute solutions of NaF, NaCI and HCI.
Question 15 Multiple Choice (Single Answer)

Consider a $0.1M$ solution of two solutes $A$ and $B$. $A$ behaves as a non-electrolyte while $80%$ of $B$ dimerises. Which of the following statement is correct regarding these solutions?

  1. The b.pt of $A$ will be less than $B$
  2. The osomotic pressure of $B$ will be more than thatof $A$
  3. The freezing point of solution $A$ will be less than that of $B$
  4. Boiling points of both solutions will be same.
Question 16 Multiple Choice (Single Answer)

In which of the following electrolysis, the composition of electrolyte is expected to remain constant under optimum conditions:

  1. Aq. AgNO$ _{3}$ solution between Ag electrodes
  2. Aq. CuSO$ _{4}$ solution between Pt electrodes
  3. Fused NaCl between Pt electrodes
  4. Aqueous AgNO$ _{3}$ solution between Pt electrodes
Question 17 Multiple Choice (Single Answer)

Which of the following will form the cathode with respect to iron anond in an electrolytic cell ?

  1. Mg
  2. Al
  3. Cu
  4. Zn
Question 18 Multiple Choice (Single Answer)

For a dilute solution of a strong electrolyte, which of the following facts is correct ?

  1. The graph b/w $ \lambda m $ and $C$ is linear
  2. The graph b/w log $ \lambda m $ and $C$ is linear
  3. The graph b/w $ \lambda m $ and $ \sqrt {C} $ is linear
  4. The graph b/w $ \lambda m $ and $ \sqrt {C} $ has a negative slope.
Question 19 Multiple Choice (Single Answer)

Which of the following is not an electrolyte?

  1. Sulphuric acid
  2. Lemon juice
  3. Tamarind juice
  4. Detergent solution
Question 20 Multiple Choice (Single Answer)

The term used for a liquid or solution, which conducts electricity with accompanying chemical change are :

  1. electrolytes
  2. electrodes
  3. anodes
  4. cathodes
Question 21 Multiple Choice (Single Answer)

Choose the correct option which is a non-electrolyte liquid.

  1. Water
  2. Salt solution
  3. Glucose
  4. All of the above
Question 22 Multiple Choice (Single Answer)

Organic compounds which are non-electrolytes is :

  1. glucose
  2. urea
  3. alcohol
  4. all of the above
Question 23 Multiple Choice (Single Answer)

A sugar solution with sugar molecules and water molecules is:

  1. weak electrolyte
  2. non electrolyte
  3. metallic conductor
  4. strong electrolyte
Question 24 Multiple Choice (Single Answer)

What kind of particles will be found in a liquid compound which is a non-electrolyte?

  1. Molecules
  2. Ionic
  3. Metallic
  4. None of the above
Question 25 Multiple Choice (Single Answer)

State which of these will act as a non-electrolyte :

  1. Liquid carbon tetrachloride
  2. Acetic acid
  3. Sodium hydroxide aqueous solution acid
  4. Potassium chloride aqueous solution.
Question 26 Multiple Choice (Single Answer)

An electrolyte is a substance which?

  1. Conducts electricity
  2. Decomposes on heating
  3. Is acidic in nature
  4. When dissolved in water, dissociates into ions
Question 27 Multiple Choice (Single Answer)

Which one from the following is always ionic in nature?

  1. Proteins
  2. Nucleic acids
  3. Electrolytes
  4. Lipids
  5. Carbohydrates
Question 28 Multiple Choice (Multiple Answers)

An electrochemical cell converts __________ energy to ____________ energy.

  1. Chemical
  2. Increases
  3. Electrical
  4. Ions
Question 29 Multiple Choice (Single Answer)

Assertion: Benzene is a good electrolyte.
Reason: A good electrolyte has charged ions that carry the electric current.










  1. <p>Both Assertion and Reason are true and Reason is the correct explanation of Assertion</p>









  2. <p>Both Assertion and Reason are true but Reason is not the correct explanation of Assertion</p>









  3. <p>Assertion is true but Reason is false</p>









  4. <p>Assertion is false but Reason is true</p>









  5. <p>Both Assertion and Reason are false</p>
Question 30 Multiple Choice (Single Answer)

Assertion : In water, a  nonelectrolyte does not ionize.
Reason : The ionic solution does not conduct electricity.

  1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  3. Assertion is true but Reason is false
  4. Assertion is false but Reason is true
  5. Both Assertion and Reason are false
Question 31 Multiple Choice (Single Answer)

What would happen if the electrodes were put in a saturated solution of glucose which is dissolved in water?

  1. Light bulb would glow
  2. Light bulb would remain dark
  3. Apparatus would combust
  4. Glucose molecules would dissociate
  5. None of the above
Question 32 Multiple Choice (Single Answer)

Which of the following can be classified as a strong electrolyte?

  1. $\displaystyle { Br } _{ 2 }$
  2. $\displaystyle { C } _{ 6 }{ H } _{ 12 }{ O } _{ 6 }$
  3. $\displaystyle Ca{ Cl } _{ 2 }$
  4. $\displaystyle { H } _{ 2 }O$
  5. $\displaystyle N{ O } _{ 3 }$
Question 33 Multiple Choice (Single Answer)

What is an electrolyte?

  1. Electrolytes are substances that dissolve by separating into ions in solution.
  2. Electrolytes are substances that do not conduct electricity but dissolve in water.
  3. Electrolytes are substances that have covalent bonds.
  4. Electrolytes are substances that share electrons.
Question 34 Multiple Choice (Single Answer)

Two solutions of X and Y electrolytes are taken in two beakers and diluted by adding $500$ mL of water. $\Lambda _m$ of X increases by $1.5$ times while that of Y increases by $20$ times, what could be the electrolytes X and Y?

  1. $X\rightarrow NaCl, Y\rightarrow KCl$
  2. $X\rightarrow NaCl, Y\rightarrow CH _3COOH$
  3. $X\rightarrow KOH, Y\rightarrow NaOH$
  4. $X\rightarrow CH _3COOH, Y\rightarrow NaCl$
Question 35 Multiple Choice (Single Answer)

The substances whose aqueous solutions conduct electricity are called : 

  1. electrolytes
  2. non-electrolytes
  3. conductors
  4. metals