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Chemistry 1488 MCQs [All-Courses]

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At start of reaction the concentration of reactants is_______________?

A high

B low

C according to Kc

D constant

Review Detailed Answer

Correct Answer: high

Chemical equilibrium state is_______________?

A dynamic state

B static state

C free state

D unidirectional state

Review Detailed Answer

Correct Answer: dynamic state

Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution ?

A 0.0002M HCI

B 0.2 mole of NaCI with 0.2 mole of HNO3

C 0.4 mole of CH3COOH with 0.4 mole of NaOH

D 0.4 mole of NH3 with 0.2 mole of HCI

Review Detailed Answer

Correct Answer: 0.4 mole of NH3 with 0.2 mole of HCI

Which of following is not a base______________?

A KOH

B NH3

C PH3

D BF3

Review Detailed Answer

Correct Answer: BF3

In which of the following equilibria will Kc and Kp have the same value ?

A PCI5 = PCI3 + Cl2

B N2 + 3H2 = 2NH

C 2CO + O2 = CO2

D N2 + O2 = 2NO

Review Detailed Answer

Correct Answer: N2 + O2 = 2NO

Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH ?

A 0

B 1

C 2

D any one

Review Detailed Answer

Correct Answer: 2

Conjugated base of a weak acid is_________________?

A weak

B strong

C moderately weak

D unstable

Review Detailed Answer

Correct Answer: strong

Solution having the property of a very little change in pH on adding a small amount of strong acid or base is called________________?

A buffer solution

B normal solution

C standard solution

D neutral solution

Review Detailed Answer

Correct Answer: buffer solution

Which one of the following is a buffer solution ?

A brine

B blood

C glue

D solution of CuSO4

Review Detailed Answer

Correct Answer: blood

Equilibrium state is achieved quickly by the addition of ________________?

A reactants

B acid

C base

D catalyst

Review Detailed Answer

Correct Answer: catalyst

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Chemistry 1488 MCQs [All-Courses]

All Topics 1488

All Topics 1488

At start of reaction the concentration of reactants is_______________?

Chemical equilibrium state is_______________?

Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution ?

Which of following is not a base______________?

In which of the following equilibria will Kc and Kp have the same value ?

Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH ?

Conjugated base of a weak acid is_________________?

Solution having the property of a very little change in pH on adding a small amount of strong acid or base is called________________?

Which one of the following is a buffer solution ?

Equilibrium state is achieved quickly by the addition of ________________?