Chemistry - Online Test

Q1. The IUPAC name of the compound CH3–CH= CH – C CH is
Answer : Option B
Explaination / Solution:
No Explaination.


Q2. Which of the group has highest +I effect?
Answer : Option D
Explaination / Solution:
No Explaination.


Q3. 1 g of an impure sample of magnesium carbonate (containing no thermally decomposable impurities) on complete thermal decomposition gave 0.44 g of carbon dioxide gas. The percentage of impurity in the sample is
Answer : Option C
Explaination / Solution:
No Explaination.


Q4. The compounds formed at anode in the electrolysis of an aquous solution of potassium acetate are
Answer : Option C
Explaination / Solution:
No Explaination.


Q5.

Assertion : The spectrum of He+ is expected to be similar to that of hydrogen

Reason : He+ is also one electron system.
Answer : Option A
Explaination / Solution:
No Explaination.


Q6. In the reaction 

X is _________
Answer : Option B
Explaination / Solution:
No Explaination.


Q7. In the third period the first ionization potential is of the order.
Answer : Option B
Explaination / Solution:
No Explaination.


Q8. The pH of normal rain water is
Answer : Option D
Explaination / Solution:
No Explaination.


Q9.

Assertion : Permanent hardness of water is removed by treatment with washing soda.

Reason : Washing soda reacts with soluble calcium and magnesium chlorides and sulphates in hard water to form insoluble carbonates
Answer : Option A
Explaination / Solution:

Ca2+ + Na2CO3 → CaCO3 ↓ + 2Na+

Q10. Find the wrong statement
Answer : Option C
Explaination / Solution:

Potassium carbonate cannot be prepared by solvay process. Potassium bicarbonate is fairly soluble in water and does not precipitate out.