Chemistry Test ...

An unknown compound 'A' has molecular formula C₄H₆. When 'A' is treated with excess of Br₂, a new substance 'B' with formula C₄H₆Br₄ is formed. 'A' forms a white precipitate with ammoniacal silver nitrate solution. 'A' may be

Which of the following is an addition polymer?

CsBr and CsCl belong to bcc lattice. If the densities of CsBr and CsCl are equal, then the ratio of edge length of CsBr to that of CsCl will be (Atomic mass of Cs = 133, Br = 80, Cl = 35. 5)

When m-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is/are

If two substances A and B have p^o_A : p^o_B = 1 : 2, where p^o_A and p^o_B are partial vapour pressures of A and B, and have mole fraction in the solution as 1 : 2, then what is the mole fraction of A in vapour phase?

In aqueous solution, the ionisation constants for carbonic acid are K₁ = 4.2 × 10^-7 and K₂ = 4.8 × 10^-11.

Select the correct statement for a saturated 0.034 M solution of carbonic acid.

Compound ‘A’, on heating with ammonia, gives compound ‘B’ which on treating with conc. H₂SO₄ gives compound ‘C’. This compound ‘C’ on reduction gives ethyl amine. What is compound ‘A’?

Bond order increases and magnetic behaviour changes in which of the following ionisation processes?

Which of the following hydroxides has the highest basic character?

Which of the following basic radicals give apple green colour in the flame test?