DEMOEXAM | ScoreExams

Question 1 of 10

The area (in square unit) enclosed by the curve y = 4 x³ and y = 16x is

A16

B32

C1/4

D1/2

E1/8

Question 2 of 10

The oxidation state of the most electronegative element in the products of the reaction between {tex}BaO_2{/tex} and {tex}H_2SO_4{/tex} are:

A0 and 1

B-1 and -2

C-2 and 0

D-2 and +1

Question 3 of 10

In Young's double slit experiment, the width of one of the slits is slowly increased to make it twice the width of the other slit. Then in the interference pattern:

Athe intensity of maxima increase while that of minima decrease

Bintensities of both maxima and minima decrease

Cthe intensities of both maxima and minima remain the same

Dthe intensities of both maxima and minima increase

Question 4 of 10

Which compound among the following give/s positive iodoform test?
1. Ethanol
2. Ethanal
3. 1-butanol
4. 2-butanol
5. Phenyl ethanal

A1, 2 and 5

B1, 3 and 4

C1, 2 and 3

D1, 2 and 4

Question 5 of 10

Given the polymers ; A = Nylon ; B = Buna - S;C = Polythene. Arrange these in increasing order of their intermolecular force (lower to higher)

AA > B > C

BB > C > A

CB < C < A

DC < A < B

Question 6 of 10

Select the wrong statement:

AIf a very small amount of {tex}AICl_3{/tex}is added to gold sol, coagulation occurs but if a large quantity of {tex}AICl_3{/tex} is added, there is no coagulation.

BOrganic ions are more strongly adsorbed on charged surfaces in comparison to inorganic ions.

CBoth emulsifier and peptising agents stabilise colloids but their actions are different.

DColloidal solution are thermodynamically stable.