State (Phase) of Alkanes

Q. In compound HC triple bondC- CH2- CH= CH- CH3, the C2- C3 bond is the type of :(1) sp- sp2(3) sp - sp3(2) sp3 -sp3(4) sp2 sp2

Q. With increase in the number of carbon atoms in alkanes, the physical state changes from.

1. Solid, Liquid, Gas.
2. Gas, Liquid, Solid.
3. Solid, Gas, Liquid.
4. Gas, Solid, Liquid.

Q. what is molecular weight of oygen?

Q. With increase in the number of carbon atoms in alkanes, the physical state changes from.

1. Solid, Liquid, Gas.
2. Gas, Liquid, Solid.
3. Solid, Gas, Liquid.
4. Gas, Solid, Liquid.

Q. Cyclohexane and ethanol at a particular temperature have vapour pressures of $280mmHg$ and $168mmHg$ respectively. If the mole fraction of cyclohexane in the solution mixture is 0.32 and the mixture is found to have a total vapour pressure of $250mmHg$.
Which of the following is correct?

1. Solvent-solute interaction is more than the solvent-solvent and the solute-solute interactions.
2. The solution mixture shows positive deviation from Raoult's law.
3. The solution mixture shows negative deviation from Raoult's law.
4. The solution mixture obeys Raoult's law

Q. 23 Rules for nomenclature of aromatic hydrocarbons?

Q.

Arrange alkanes alkenes and alkynes in increasing order of the c-h bond lengths Give reason for the same Thnx