Question 1: Palette 1/5

BITSAT 2023 MCQ

Which of the following is added to remove permanent hardness of water?

A

$\mathrm{Cl}_2$

B

$\mathrm{Na}_2 \mathrm{CO}_3$

C

$\mathrm{Ca}(\mathrm{OCl}) \mathrm{Cl}$

D

$\mathrm{K}_2 \mathrm{CO}_3$

Question 2: Palette 2/5

BITSAT 2023 MCQ

Which of the following acts as interstitial hydride?

A

$\mathrm{NH}_3$

B

$\mathrm{CH}_4$

C

$\mathrm{ZnH}_2$

D

$\mathrm{H}_2 \mathrm{O}$

Question 3: Palette 3/5

BITSAT 2022 MCQ

Which one of the following is correct order of given isotopes?

I. T₂ > D₂ > P₂ (order of boiling point)

II. T₂ > D₂ > P₂ (order of bond energy)

III. T₂ = D₂ = P₂ (order of bond length)

IV. T₂ < D₂ < P₂ (order of reactivity with Cl₂)

A

I and II

B

III and IV

C

II, III and IV

D

All of these

Question 4: Palette 4/5

BITSAT 2022 MCQ

ortho and para form of hydrogen have

A

different physical and chemical properties

B

identical physical properties but different chemical properties

C

identical chemical properties but different physical properties

D

identical chemical and physical properties

Question 5: Palette 5/5

BITSAT 2021 MCQ

Some statements about heavy water are given below

1. Heavy water is used as a moderator in nuclear reactors.

2. Heavy water is more associated than ordinary water.

3. Heavy water is more effective solvent than ordinary water.

Which of the above statements are correct?

A

1 and 2

B

1, 2 and 3

C

2 and 3

D

1 and 3