Chemistry
Classification-Of-Elements-And-Periodicity-In-Properties
Easy
Question
The isoelectronic set of ions is :
- F– , Li+ , Na+ and Mg2+
The correct answer is:
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The increasing order of nucleophilicity of the following nucleophiles is
The increasing order of nucleophilicity of the following nucleophiles is
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The green colour produced in the borax bead test of a chromium (III) salt is due to
The green colour produced in the borax bead test of a chromium (III) salt is due to
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The correct order of the first ionization enthalpies is
The correct order of the first ionization enthalpies is
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The element having greatest difference between its first and second ionization energies, is :
The element having greatest difference between its first and second ionization energies, is :
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Which of the following statements is false regarding Arrhenius concept?
Which of the following statements is false regarding Arrhenius concept?
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Which of the following statement is the limitation of Arrhenius concept?
Which of the following statement is the limitation of Arrhenius concept?
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Assertion: HCl is an Arrhenius acid.
Reason: HCl will yield hydronium ions as the only positive ions in the solution.
Assertion: HCl is an Arrhenius acid.
Reason: HCl will yield hydronium ions as the only positive ions in the solution.
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Assertion: C2H5OH is as an Arrhenius base.
Reason: C22H5OH donates its OH- in aqueous solutions.
Assertion: C2H5OH is as an Arrhenius base.
Reason: C22H5OH donates its OH- in aqueous solutions.
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A substance that can donate the OH- ion -
A substance that can donate the OH- ion -
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What is the limitation of Arrhenius concept of acid and base?
What is the limitation of Arrhenius concept of acid and base?
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Consider a reversible reaction, A + B ⇌ C + D:
Observe the diagram; when equilibrium stage will be attained -
Consider a reversible reaction, A + B ⇌ C + D:
Observe the diagram; when equilibrium stage will be attained -
ChemistryGrade-11
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Consider a reversible reaction, A + B ⇌ C + D:
Choose the incorrect inferences from the following options -
Consider a reversible reaction, A + B ⇌ C + D:
Choose the incorrect inferences from the following options -
ChemistryGrade-11
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Which of the following species has the most number of H+ ions?
Which of the following species has the most number of H+ ions?
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Chemistry
According to Arrhenius theory, bases are substances (or species) that generate hydroxyl ions OH- (aq). Identify the base which doesn’t follow the Arrhenius concept.
According to Arrhenius theory, bases are substances (or species) that generate hydroxyl ions OH- (aq). Identify the base which doesn’t follow the Arrhenius concept.
ChemistryGrade-11
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Match the following:
| COLUMN – I | COLUMN - II |
| A. Hydrochloric acid | (i) Arrhenius weak acid |
| B. Sodium hydroxide | (ii) Arrhenius strong base |
| C. Carbonic acid | (iii) Arrhenius strong acid |
| D. Aluminum hydroxide | (iv) Arrhenius weak base |
Match the following:
| COLUMN – I | COLUMN - II |
| A. Hydrochloric acid | (i) Arrhenius weak acid |
| B. Sodium hydroxide | (ii) Arrhenius strong base |
| C. Carbonic acid | (iii) Arrhenius strong acid |
| D. Aluminum hydroxide | (iv) Arrhenius weak base |
ChemistryGrade-11
