1.Which one of the following nitrates will leave behind Ametal on strong heating?

1. Ferric nitrate
2. Copper nitrate
3. Manganese nitrate
4.Silver nitrate

2.A mixture of amylose and amylopectin is called

1.Lactose
2. Starch
3. Cellulose
4. Sucrose

3.Which of the following is a germicide also?

1.Cationic detergent
2. Anionic detergent
3. Non-ionic detergent
4. None of the above

4. Chloropicrin is obtained by the reaction of

1.Steam on carbon tetrachloride
2. Nitric acid on chlorobenzene
3. Chlorine on picric acid
4. Nitric acid on chloroform

5. The maximum proportion of available volume that can be filled by hard spheres in diamond is

1.0.52
2. 0.34
3. 0.32
4. 0.68

6.Which amino acid have more than one stereogenic centre?

Aspartic acid
2. Lysine
3.Arginine
4. Histidine

7. Cryolite is

1.Sodium borofluride
2. Magnesium silicate
3.Aluminium
4. Sodium aluminium fluoride

8.Which of the following elements is present in Teflon?

1.Fluorine
2.Chlorine
3.Bromine
4.Iodine

9. The catalyst used in the polymerization of high density polythene is

1.Titanium oxide
2. Titanium isoperoxide
3.Lithium tetrachloride and triphenyl aluminium
4.Titanium tetrachloride and trimethyl aluminium

10. The coordination number of Al in the crystalline state of AlCl_3is

1.2
2.4
3.6
4. 8

11. Vapour phase refining of nickel is carried out by using

1.Iodine
2.Chlorine
3.HCL
4.CO

12.20 g of hydrogen is present in a 5 L vessel. The molar concentration of hydrogen is

1.1
2.2
3.3
4. 4

13. 3.65 g of HCl is dissolved in 16.2 g of water. The mole fraction of HCl in the resulting solution is

1. 0.1
2. 0.2
3. 0.3
4. 0.4

14. At 25 degree C a 5% aqueous solution of glucose (molecular weight = 180 g/mol) is isotonic with 2% aqueous solution containing an unknown solute. What is the molecular weight of the unknown solute.

1.60
2. 80
3. 72
4.63

15. Which of the following statements is not correct?

1.A meso compound has chiral centres but exhibits no optical activity
2. A meso compound has no chiral centres and thus are optically inactive
3. A meso compound has molecules in which one half of molecule is superimposable on the other even through chiral centre is present in them
4. A meso compound is optically inactive because the rotation caused by one half of molecule is cancelled by the rotation produced by another half

16.The correct value of 0 degree C on Kelvin scale will be

1. 273.15 k
2. 273.00 k
3. 273.05 k
4.273.63 k

17. Noble gases are group of elements which exhibit very

1.High chemical activity
2.Much paramagnetic properties
3.Minimum electronegativity
4. Low chemical activity

18. 0.4 g of a silver salt of a monobasic orgainc acid gave 0.26 g pure silver on ignition. the molecular weight of the acid is (atomic weight of silver=108)

1.58
2. 37
3. 89
4. 105

19. Which amino acid has pyhenyl —OH group?

1. Lysine
2.Arginine
3. Proline
4. Tyrosine

20.In which of the following substances the carbon atom is arranged in a regular tetrahedral structure?

1. Diamond
2. Benzene
3. Graphite
4. Carbon black

21.The concentration of salts in soil is increased by

1. Canal water
2.Excessive use of pesticides
3.Excessive use of fungicides
4.All of the above

22. Which of the following compounds will not undergo decomposition on passing electricitythrough aqueous solution?

1.Sugar
2.Sodium acetate
3. Sodium chloride
4. Sodium bromide

23. 2-methyl-2-butanol on treatment with HCl gives predominantly

1.2-chloro-3-methylbutane
2. 2,2-dimethylpentane
3. 2-chloro-2-methylbutane
4. 1-chloro-2-methylbutane

24.Which is most basic in character?

1.CsOH
2. KOH
3. NaOH
4. LiOH

25. Moissan boron is

1.Amorphous boron of ultra purity
2. Crystalline boron of ultra purity
3. Amorphous boron of low purity
4. Crystalline boron of low purity

26. Nylon is manufactured from

1. Methyl salicylate
2. Teflon
3.Adipic acid
4.Ethylene

27.40% by weight solution will contain how much mass of the solute in 1L solution, density of the solution is 1.2 g/mL?

1.480 g
2. 48 g
3. 38 g
4. 380 g

28.The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminium metal from bauxite by the hall process is (Atomic mass of Al=27)

1.180kg
2. 270 kg
3. 540 kg
4. 90 kg

29.For the purification, isolation and separation of organic compounds, the latest technique followed is

1.Chromatography
2. Steam distillation
3. Fractional crystallisation
4. Sublimation

30.Formation of coloured ions by transition metals signifies

1.Absorption of light from UV range
2.Emission of light
3. Presence of unpaired electrons in s and p orbitals
4.Complimentary colours to the absorbed light