Chemistry - Online Test

Q1. Anemophilous flowers have __________ .
Answer : Option D
Explaination / Solution:
No Explaination.


Q2.

Assertion: A solution of sucrose in water is dextrorotatory. But on hydrolysis in the presence of little hydrochloric acid, it becomes levorotatory.

Reason: Sucrose hydrolysis gives equal amounts of glucose and fructose. As a result of this change in sign of rotation is observed.

Answer : Option A
Explaination / Solution:
No Explaination.


Q3. Which one of the following structures represents nylon 6,6 polymer?
Answer : Option D
Explaination / Solution:
No Explaination.


Q4. Conjugate base for Bronsted acids H2O and HF are
Answer : Option C
Explaination / Solution:

H2O + H2O H3O+ + OH-

acid 1 + base 1 acid 2 + base 2


HF + H2O H3O+ + F-

acid 1 + base 1 acid 2 + base 2

Conjugate bases are OH- and F- respectively


Q5.
Calculate ΛºHOAC using appropriate molar conductances of the electrolytes listed above at infinite dilution in water at 25oC .
Answer : Option C
Explaination / Solution:

( Λº )HoAC = ( Λº)HCl + ( Λº)NaOAC - ( Λº)NaCl

= (426.2 + 91) (126.5)

= 390.7


Q6. Statement : To stop bleeding from an injury, ferric chloride can be applied. Which comment about the statement is justified?
Answer : Option B
Explaination / Solution:
No Explaination.


Q7.  on treatment with Con H2 SO4 , predominately gives
Answer : Option B
Explaination / Solution:



Q8. Mammals are ______________ animals.
Answer : Option B
Explaination / Solution:
No Explaination.


Q9. The wall of human heart is made of
Answer : Option D
Explaination / Solution:
No Explaination.


Q10.

Predict the product Z in the following series of reactions


Answer : Option A
Explaination / Solution: