The number of water molecules in a drop of water weighing 0.018 g is ________.

(a)

6.022\(\times\)10²⁶

(b)

6.022\(\times\)10²³

(c)

6.022\(\times\)10²⁰

(d)

9.9 \(\times\)10²²

Which of the following pairs of d-orbitals will have electron density along the axes ?

(a)

d_z2, d_xz

(b)

d_xz, d_yZ

(c)

d_z2, d_x²-y²

(d)

d_xy ,d_x^2-y²

Which of the following elements will have the highest electro negativity ____________

(a)

Chlorine

(b)

Nitrogen

(c)

Cesium

(d)

Fluorine

Non-stoichiometric hydrides are formed by _____________

(a)

palladium, vanadium

(b)

carbon, nickel

(c)

manganese, lithium

(d)

nitrogen, chlorine

sodium is stored in _____________

(a)

alcohol

(b)

water

(c)

kerosene

(d)

none of these

The IUPAC name of the Compound is _____________
 

(a)

2,3 - Diemethylheptane

(b)

3- Methyl -4- ethyloctane

(c)

5-ethyl -6-methyloctane

(d)

4-Ethyl -3 - methyloctane

Homolytic fission of covalent bond leads to the formation of ___________.

(a)

electrophile

(b)

nucleophile

(c)

Carbo cation

(d)

free radical

The C – H bond and C – C bond in ethane are formed by which of the following types of overlap _________

(a)

sp³ – s and sp³ – sp³

(b)

sp² – s and sp² – Sp²

(c)

sp – sp and sp – sp

(d)

p – s and p – p

With respect to the position of – Cl in the compound CH₃ – CH = CH – CH₂ – Cl, it is classified as __________

(a)

Vinyl

(b)

Allyl

(c)

Secondary

(d)

Aralkyl

Haemoglobin of the blood forms carboxy haemoglobin with __________.

(a)

Carbon dioxide

(b)

Carbon tetra chloride

(c)

Carbon monoxide

(d)

Carbonic acid