| A. Elevation of boiling point | (i) Tetrahedral arrangement of atoms |
| B. Hydrogen fluride | (ii) Le-Chatelie’sprinciple |
| C. Diamond | (iii) Aluminium |
| D. Diamond | (iv) Relative lowering of vapour pressure |
| E. Cryolite | (v) Hydrogen bond |
Fill in the blanks by choosing the appropriate words from those given in brackets :
[Acidic, basic, neutral, salt hydrolysis, common ion effect, buffer action, increases, decreases, ortho-para, beta, homolytic, heterolytic, gamma, meta, addition, elimination, four, substitution, zero, three].
(i) When an element loses an alpha particle and a ......particle, its atomic number decreases by one unit and its atomic mass decreases by.......units.
(ii) Solubility of silver chloride...........in the presence of sodium chloride because of ............effect.
(iii) In the benzene ring, the distribution of the nitro group is........directing, while, the distribution of the chloro group is...........directing.
(iv) The reaction of chlorine with methane is a................reaction which involves ............. fission of C-H bond.
(v) Ammonia chloride solution is ......... because of..................
Complete the following statements by selecting the correct alternative from the choices given:
Homolytic fission of covalent bond results in the formation of :
Complete the following statements by selecting the correct alternative from the choices given:
The compound which gives a positive Haloform test and a positive Fehling solution test is :
Complete the following statements by selecting the correct alternative from the choices given:
Benzaldehyde, when heated with an alcoholic solution of potassium cyanide, forms :
Complete the following statements by selecting the correct alternative from the choices given:
An acidic buffer can be prepared by mixing :
Complete the following statements by selecting the correct alternative from the choices given:
Phosphorous pentachloride reacts with sulphur dioxide to form :
Correct the following statements :
The enthalpy of a system is an intensive property i.e. its value depends on the amount of matter in the system.
Correct the following statements:
In a nitrogen molecule, two nitrogens are linked together by three sigma bonds.
