Tag: chemical reactions

Quizzes (8) Questions (144)

Questions Related to chemical reactions

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

Organic compounds which are non-electrolytes is :

  1. glucose

  2. urea

  3. alcohol

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nonelectrolytes are compounds that do not ionize at all in solution. As a result, solutions containing nonelectrolytes will not conduct electricity. Typically, nonelectrolytes are primarily held together by covalent rather than ionic bonds. 

Common examples of nonelectrolytes are glucose, urea and alcohol.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

A sugar solution with sugar molecules and water molecules is:

  1. weak electrolyte

  2. non electrolyte

  3. metallic conductor

  4. strong electrolyte
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sugar molecules are covalent compounds which doesn't dissociates into ions so they will not conduct electricity in solution and are non-electrolyte.
Also, water has very low ionisation constant so it dissociates very low and pure water is consists almost entirely of molecules. As number of ions are very less in pure water so normally it will not conduct electricity and its non-electrolyte.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Molecules will be found in a liquid compound which is a non-electrolyte. For example, glucose is a non electrolyte. It does not dissociates in aqueous solution. Hence, in aqueous glucose solution, we can find glucose molecules. Another example of non electrolyte is urea.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

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.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nonelectrolytes are compounds that do not ionize at all in solution. As a result, solutions containing nonelectrolytes will not conduct electricity. Typically, nonelectrolytes are primarily held together by covalent rather than ionic bonds. A common example of a nonelectrolyte is glucose. Liquid carbon tetrachloride is also a nonelectrolyte.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An electrolyte is a substance that produces an electrically conducting solution when dissolved in a polar solvent, such as water. The dissolved electrolyte separates into cations and anions, which disperse uniformly through the solvent. Electrically, such a solution is neutral.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

An electrochemical cell converts __________ energy to ____________ energy.

  1. Chemical

  2. Increases

  3. Electrical

  4. Ions
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

An electrochemical cell converts chemical energy to electrical energy. An electrochemical cell has two electronic conductors such as metal plates or carbon rods dipped into an electrolytic or ionic conductor which is an aqueous electrolytic solution or a pure liquid of an electrolyte.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

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>
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement 1: Benzene is a non electrolyte. Its molecules do not undergo dissociation.
Statement 2: A good electrolyte has charged ions that carry the electric current.
Statement 1 is not correct but Statement 2 is correct.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

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
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement I : In water, a  nonelectrolyte does not ionize.
For example, urea and glucose are non-electrolytes. They do not ionize in water.
Statement II : The ionic solution does conduct electricity.
Thus aqueous $NaCl$ solution conducts electricity as $NaCl$ dissociates into $\displaystyle Na^+$ ions and chloride $\displaystyle Cl^-$ ions.
$\displaystyle NaCl \rightleftharpoons Na^+ +  Cl^- $.
Statement I is True, Statement II is False

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the electrodes were put in a saturated solution of glucose which is dissolved in water, light bulb would remain dark.
This indicates that no electricity is passing through aqueous glucose solution.
Glucose is a non electrolyte. Hence, in aqueous solution of glucose, no ions are present. Hence, it cannot conduct electricity.