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Chemistry CBSE Medical Test - 2

A test by Muggu.

Test Questions

Question

Equivalent weights of oxidizing and reducing agents in the following reaction:
$5Zn+V_2O_5\rightarrow 5ZnO+2V[Zn=65.4,V=51]$

Answers

Correct	Answer Text
	36.2, 65.4
	18.2, 65.4
	36.4, 32.7
	18.2,32.7

Question

A 1.00 g sample of H_2O_2 solution containing $x\% H_2O_2$ by weight requires x ml of KMnO_4 solution for complete oxidation under acidic condition Normality of KMnO_4 solution is

Answers

Correct	Answer Text
	$\frac {1}{17}N$
	$\frac {1}{34}N$
	$\frac {10}{34}N$
	$\frac {10}{17}N$

Question

19 g of molten SnCl_2 is electrolyzed for sometime, inert electrodes are used. 0.119 g of Sn is deposited at cathode. No substance is lost during electrolysis. Ratio of the weights of $SnCl_2 \quad : \quad SnCl_4$ after electrolys is- (Sn = 119)

Answers

Correct	Answer Text
	18.62 : 2.61
	1.862 : 2.61
	1.862 : 0.261
	18.62 : 0.261

Question

The resistance of a solution ‘X’ is 50 ohm and that of solution ‘Y’ is 100 ohm, both solutions being taken in the same conductivity cell. If equal volumes of solution ‘X’ and ‘Y’ are mixed, what will be the resistance of mixture using the same cell (there is no change in degree of dissociation of X and Y on mixing)?

Answers

Correct	Answer Text
	75 ohm
	25 ohm
	33.33 ohm
	66.67 ohm

Question

When 36.6 g of $BaCl_2 \quad xH_2O$ is roasted it lost 5.4 g of mass. The value of x is [Ba = 137.3]

Answers

Correct	Answer Text
	2
	5
	6
	7

Question

Two closed vessels of equal volume containing air at pressure P_1 and temperature T_1 are connected to each other through a narrow tube. If temperature in one vessel is now maintained at T_1 and that in the other at T_2 what will be the pressure in vessels?

Answers

Correct	Answer Text
	$\frac {2P_1T_1}{T_1T_2}$
	$\frac {2P_1T_2}{T_1T_2}$
	$\frac {T_1}{2P_1T_1}$
	$\frac {2P_1}{T_1T_2}$

Question

The instantaneous rate of disappearance of MnO_4 ion in the following reaction is
$4.56*10^{-3} mole \quad litre^{-1} sec^{-1}$
$2MnO^-4+10 I^-+16H^+\rightarrow 2Mn^{2+}+ 5I_2+8H_2O$
The rate of appearance of l_2 is -

Answers