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201.

The increasing order of the atomic radii of the following elements is : (a) C (b) O(c) F(d) ( e) BrA. `(C) lt(b) lt (a) lt (d) lt (e) `B. `(b) lt(c) lt (d) lt (a) lt (e) `C. `(b) lt(c) lt (b) lt (a) lt (e) `D. `(a) lt(b) lt (c) lt (d) lt (e) `

Answer» Correct Answer - A
Discussion
202.

Atomic radius of Ag is similar toA. CuB. HgC. AuD. Ni

Answer» Correct Answer - C
Discussion
203.

Atomic radius of Ag is similar toA. NiB. AuC. CuD. Hg

Answer» Correct Answer - 2
Discussion
204.

A solution of m - chloroaniline, m- chlorophenol and m - chlorobenzoinc acid in ethyl acetate was extracted initially with a saturated solution of ` Na HCO _ 3 ` to give fraction A. The left over organic phase was extracted with dilute NaOH solution to give fraction B. The final organic layer was labelled as fraction C. Fractions A, B and C, contain respectively :A. m - chlorophenol , m - chlorobenzoic acid and m - chloroanilineB. m - chlorobenzoic acid, m - chloroaniline and m - chlorophenolC. m - chlorobenzoic acid, m - chlorophenol and m - chloroanilineD. m - chloroaniline, m - chlorobenzoic acid and m - chlorophenol

Answer» Correct Answer - c
Discussion
205.

Arrange the following in order of their `pK_(b)` value (a) (b) `CH_(3)-NH-CH_(3)` (c) `H_(2)N-CH=NH`A. ` (B) lt (C ) lt (A) `B. `(A ) lt (B) lt (C ) `C. ` ( B ) lt (A) lt (C ) `D. ` (C ) lt (A) lt (B) `

Answer» Correct Answer - C
Discussion
206.

Arrange the following in order of their `pK_(b)` value (a) (b) `CH_(3)-NH-CH_(3)` (c) `H_(2)N-CH=NH`A. `A gt B gt C`B. `B gt A gt C`C. `C gt B gt A`D. `B gt C gt A`

Answer» Correct Answer - D
Discussion
207.

Arrange the order of `C--OH` bond length of the following compounds. (A) Methanol (B) Phenol (C) p-EthoxyphenolA. `"methanol"lt "p-etoxyphenol" lt "phenol"`B. `"phenol" lt "methanol" lt "p-etoxyphenol" `C. `"methanol" lt "phenol" lt "p-etoxyphenol" `D. `"phenol" lt "p-etoxyphenol" lt "methanol" `

Answer» Correct Answer - D
Discussion
208.

A metal (A) on heating in nitrogen gas given compound B.B on teratement with `H_(2)O` givens a colourless gas which when passed throught `CuSO_(4)` solution given a dark blue - violet coloured solution . A and B respectivley are :A. Na and `Na_(3)N`B. `Mg and Mg(NO_(3))_(2)`C. `Na and NaNO_(3)`D. `Mg and Mg_(3)N_(2)`

Answer» Correct Answer - D
Discussion
209.

Gypsum on heating at 393K producesA. `CaSO_(4). 0.5H_(2)O`B. Anhydrous `CaSO_(4)`C. Dead burnt plasterD. `CaSO_(4).5H_(2)O`

Answer» Correct Answer - A
Discussion