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TS EAMCET 2018 :: Chemistry :: General questions




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21.

Which of the following carbohydrates has a glycosidic linkage ?


A) Fructofuranose

B) Glucopyranose

C) Maltose

D) $\beta$-D -fructose



22.

What are X and Y , respectively  in the following reactions? 

$Au+aqua-regia\rightarrow AuCl_{4}^{-}+H_{2}O+X$

$Pt+aqua-regia\rightarrow PtCl_{6}^{2-}+H_{2}O+Y$


A) $N_{2}O, NO$

B) $N_{2}O,N_{2}O$

C) $NO,NO$

D) $NO, NO_{2}$



23.

The following graph is obtained for the physisorption of gas as a function of pressure at different temperatures.

1972021520_d1.PNG

The correct order of temperature is 


A) $T_{3} $ < $T_{2}$ < $T_{1}$

B) $T_{2} $ < $T_{3}$ < $T_{1}$

C) $T_{2} $ < $T_{1}$ < $T_{3}$

D) $T_{1} $ < $T_{3}$ < $T_{2}$



24.

A litre of sea water (which weights 1030 g) contains $6 \times 10^{-3}$ g of dissolved oxygen. The concentration of dissolved oxygen in ppm is 


A) 5.8

B) 6.0

C) 6.2

D) 6.4



25.

 What are  the products formed in the reaction given below

$Ph-CH_{2}-CH=CH-CH_{3}$  $\underrightarrow{(i)O_{3}}$

                                                    (ii) Zn+H2O

 


A) Acetic acid and 2-phenyl acetic acid

B) 2-phenyl ethanal and ethanal

C) 2-phenyl ethanol and ethanol

D) 1-phenyl butan-2,3-diol



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