Isomerism

Q. What volume of HCl solution of density 1.2 g/cm^3and containing 36.5% by weight HCl, must be allowed to react wih zinc (Zn) in order to liberate 4.0 g of hydrogen?(a) 333.33 mL(d) None of these(c) 614.66 mL(b) 500 mL

Q. An organic compound (A) , is insoluble in aqueous NaHCO_3 but soluble in NaOH. (A) on treatment with bromine water , rapidly forms compound (B) . Give structures of (A) and (B). What will be (A) if it does not dissolve in NaOH solution but shows the other mentioned reactions? Also , state how can thiophene , present in a sample of impure benzene be identified

Q. what is berzelius hypothesis?

Q. 2.Draw structure of - 2, 3 Dimethyl Heptane 3-Ethyl Pentane-2-ol 3-Methyl, 2-Butene Acetyldehyde 2-Nitro-Butane 2-Methyl Propanoic Acid.

Q. one mole of PCl5 is heated in one litre container . if 0.6 moles of chlorine is at equilibrium How to calculate the value of equilibrium constant?

Q. What is anomeric carbon atom

Q.

The total number of isomers of the aromatic compound having molecular formula $C_7{H}_{8}O$ is

1. 3

2. 4

3. 5

4. 2

Q. What will be the degree of unsaturation for a compound having molecular formula $C_4{H}_{9}ON$ ?

1. 1
2. 2
3. 4
4. 6

Q. 49. 0.177g of a metal produces with dil HCl 177ml of dry hydrogen gas at 766 mm and 12 degree Celsius. The equivalent weight of metal is? (1) 17.7 (2) 11.6 (3) 23 (4) 12

Q. what are difference between isotopes, isobars and isotones .give any 5 points

Q.

Which of the following are not isomers ?

1. CH₃CH₂CH₂OH and CH₃CH₂CH₂CH₂OH

2. CH₃CH₂OH and CH₃OCH₃

3. CH₃CN and CH₃NC

4. 

Q. 74. The amount of zinc(atomic weight=65) necessary to produce 224ml of H_2 by the reaction with an acid will be?

Q. why in ionic solid the bcc latice has the value of z equals to 1 why vi bn b not

Q. Equal weight of N2 & H2 react to form NH3 under suitable conditions, then the limiting reagent is [1]H2 [2]N2 [3]NH3 [4]none of these

Q. 94 0.9 g Al reacts with dil. HCl to give H2. The volume of H2 evolved at STP is

Q.

The catalyst used in the polymerisation of isoprene is

1. Ca

2. Na

3. Si

4. Al

Q.

Zinc and hydrochloric acid react according to the reaction : Zn + 2HCl ---> ZnCl₂ + H₂ . If 0.30 mol of Zn is added to HCl containing 0.52 mol HCl, how many moles of H₂ are produced ?

Q. If Ionic bonds are stronger then covalent bonds then why they easily break down on dissolving in water but not covalent bons(we can break ionic bonds in water by boiling it but cant seperate H2 and O)?

Q. Compounds with same molecular formula but different structural formula are

1. Isomers
2. Isotopes
3. Isobars
4. Isoelectronic

Q. 6 Ions present in solution of ammonia and alkaline metals

Q. 88. draw lewis structure of socl2. and explain shape and hybridisations of NO and NO2 NO3

Q. 30.A mixture of zinc and Ag weigh 6.5g react with HCl and evolve H2 gas which react with 0.56 litre of Co2 at STP completely to form water. find percentage mass of Ag mixture?

Q. Assertion: one mole of water molecules at 4°C should have the volume of 18ml. Reason: Water contains H2O molecules bonded to each other by intermolecular hydrogen bonding. Which is true, assertion or reason or both?

Q. THE NUMBER OF C ATOMS PRESENT ALKYL VINYL ACETYLENE IS________ AND IT HAS_____DEGREE OF UNSATURATION.

Q. Which of the following substrates will give a racemised product?

1. 
2. 
3. 
4. 

Q. On what basis we decide nucleophilic strength of a compound?

Q. what is the product of reaction benzene with chloroiodide(CLI)? orC6H6+CL

Q. How to know that which carbon is alpha carbon in a carbon chain?

Q.

Isomers which can be interconverted through rotation around a single bond are:

1. Position isomers

2. Enantiomers

3. Metamers

4. Conformers

Q. If sp hybridiesd orbitals are more stable than sp^2 and sp^3 hybrid orbitals, then why is ethyne less stable than ethene and ethane?