1

### NEET 2016 Phase 1

Which of the following statments is false?
A
Ca2+ ions are not important in maintaining the regular beating of the heart.
B
Mg2+ ions are important in the green parts of the plants.
C
Mg2+ ions form a complex with ATP.
D
Ca2+ ions are important in blood clotting.

## Explanation

Ca2+ ions are required to trigger the contraction of muscles and to maintain the regular beating of the heart.
2

### NEET 2016 Phase 1

The product obtained as a result of a reaction of nitrogen with CaC2 is
A
CaCN2
B
Ca2CN
C
Ca(CN)2
D
CaCN

## Explanation

CaC2 + N2 $\to$ CaCN2 + C
3

### NEET 2016 Phase 2

In context with beryllium, which one of the following statements is incorrect?
A
It is rendered passive by nitric acid.
B
It forms Be2C
C
Its salts rarely hydrolyze.
D
Its hydride is electron-deficient and polymeric.

## Explanation

4

### NEET 2016 Phase 2

The suspension of slaked lime in water is known as
A
lime water
B
quick lime
C
milk of lime
D
aqueous solution of slaked lime.

## Explanation

This process is known as slaking of lime.

The paste of lime in water (suspension) is called milk of lime while the filtered and clear solution is known as lime water.