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TS EAMCET 2017 :: Chemistry :: General questions




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11.

Cyclohexylamine and aniline can be distinguished by


A) Hinsberg test

B) Carbylamine test

C) Lassaigne test

D) Azo dye test



12.

Commercially  available $H_{2}SO_{4}$ is 98 g by weight of $H_{2}SO_{4}$  and 2 g by weight of water . It's density is

1.38 g cm-3. Calculate the molality (m) of $H_{2}SO_{4}$(molar mass of $H_{2}SO_{4}$ is 98 gmol-1)


A) 500 m

B) 20 molal

C) 50 m

D) 200 m



13.

The reactivity of alkyl bromides

 1282021711_m13.PNG

 Towards iodide ion in dry acetone decrease to the order 


A) IV >I >II>III

B) I >IV >II >III

C) III > II > I >I

D) III >II > IV >1



14.

Which one of the following  statement is correct  for $d^{4}$ ions [P= pairing energy]


A) When $\triangle_{0} $>P, low-spin complex form

B) When $\triangle _{0}$ <P, low-spin complex form

C) When $\triangle _{0} $ >P, high -spin complex form

D) When $\triangle _{0} $< P, both high -spin and low-spin complex form



15.

The set representing  the right order of ionic radius is 


A) $Li^{+} > Na^{+} > Mg^{2+} > Be ^{2+}$

B) $Mg^{2+} > Be^{2+} > Li^{+} > Na ^{+}$

C) $Na^{+} > Mg^{2+} > Li^{+} > Be ^{2+}$

D) $Na^{+} > Li^{+} > Mg^{2+} > Be ^{2+}$



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