DEMOEXAM | ScoreExams

Question 1 of 10

A solution of urea (mol. Mass 60g {tex}mol^{-1}{/tex}) boils at {tex}100.18^\circ{/tex} C at the atmospheric pressure. If {tex}K_f{/tex} and {tex}K_b{/tex} for water are 1.86 and 0.512 K kg {tex}mol^{-1}{/tex} respectively, the above solution will freeze at

A{tex}-6.54^\circ{/tex}

B{tex}-0.654^\circ{/tex} C

C{tex}6.54^\circ{/tex} C

D{tex} 0.654^\circ{/tex} C

Question 2 of 10

A2 tan x + c

B√cot x + c

C2 √tan x + c

Dtan ² x + c

Ecot x + c

Question 3 of 10

Which of the following on thermal decomposition yields a basic as well as an acidic oxide?

A{tex}KClO_3{/tex}

B{tex}Na_2CO_3{/tex}

C{tex}NaNO_3{/tex}

D{tex}CaCO_3{/tex}

Question 4 of 10

Two finite sets have m and n elements respectively. The total number of subsets of first set is 56 more than the total number of subsets of the second set. The values of m and n respectively are

A7, 6

B6, 3

C5, 1

D7, 8

E3, 6

Question 5 of 10

Which of the following organic compounds has same hydridization as it's combustion product- {tex}(CO_2){/tex} ?

AEthane

BEthyne

CEthene

DEthanol

Question 6 of 10

Cathode rays are produced when the pressure is of the order of

A2cm of Hg

B0.1cm of Hg

C0.01mm of Hg

D1μm of Hg

E0.001mm of Hg

Question 7 of 10

∫e^{3 log x} (x⁴+1)^-1 dx is equal to

Ae^{3 log x} + c

B1/4 log(x⁴+1)+c

Clog(x⁴+1)+c

D1/2 log(x⁴+1)+c

Ex⁴/(x⁴+1) + c

Question 8 of 10

The average monthly salary of workers in a factory is Rs. 206. If the average monthly salary of males and females are Rs. 210 and Rs. 190 respectively, the percentage of female employed in the factory is

A10

B50

C30

D20