One mole of the complex compound Co(NH₃)₅Cl₃ gives three moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO₃ solution to yield two moles of AgCl(s). The structure of complex is: 

1) $$[Co(NH_{3})_{4}Cl]Cl_{2}.NH_{3}$$
2) $$[Co(NH_{3})_{5}Cl]Cl_{2}$$
3) $$[Co(NH_{3})_{3}Cl_{3}]2.NH_{3}$$
4) $$[Co(NH_{3})_{4}Cl_{2}]Cl.NH_{3}$$

The fragrance of the flower is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in the vapour phase. A suitable method for the extraction of these oil from the flower is:

1) distillation with reduced pressure

2) distillation

3) steam distillation

4) chromatography

Acetone is soluable in water due to 

1. methyl group 
2. neutral nature 
3. dissociation in water 
4. hydrogen bonding 

The value of observed and calculate molecular weights of silver nitrate are 92.64 and 170 respectively. The degree of dissociation of silver nitrate will be :

1) 60%
2) 83.5%
3) 85.3%
4) 41.6%

The long form of the periodic table has _______ periods, and _______vertical columns.

 1) 6;8
2) 6;18
3) 8;12
4) 7;18

Calculate the surface area in (sq m) of a catalyst that adsorbs 103cm3 of nitrogen reduced to STP per gram in order to form the monolayer. The effective area (in m²) occupied by N_2? molecule on the surface is: ( surface area of N₂?=1.62×10⁻¹5cm²)

1) 4115 m²
2) 2355 m²
3) 4355 m²
4) 435.5 m²

Tautomerismwill be exhibited by 

1) (CH₃)₃CNO
2) (CH₃)₂NH
3) R₃CNO₂
4) RCH₂NO₂

 Which of the following do not give glyoxal on ozonolysis followed by reaction with Zn and H₂O?

1) Benzene
2) HC=CH
3) Toluene
4) Ethene

At a particular temperature, the ratio of molar conductance to specific conductance of 0.01 M NaCl solution is:

1) 10⁵ cm³mol⁻¹
2) 10³ cm³mol⁻¹
3) 10 cm³mol⁻¹
4) 10⁵ cm²mol⁻¹

Silk and woolen clothes are often damaged by

1) Flies

2) Insects

3) Bacteria

4) Animals