Chemistry Class-11: Chapter –10. The s-Block Elements Part – 6

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IV. Matching Type ~ Chemistry Class - 11: Chapter –10. The S-Block Elements Part – 6

IV. Matching Type

In the following questions more than one option of column I and II may be correlated.

Question: 41

Match the elements given in Column I with the properties mentioned in Column II

Elements and Their Properties
Elements and their properties

Column I

Column II

(i)

(a)

Insoluble sulphate

(ii)

(b)

Strongest monoacidic base

(iii)

(c)

Most negative value among alkali metals.

(iv)

(d)

Insoluble oxalate

(e)

outer electronic configuration

Answer:

Question: 42

Match the compounds given in Column I with their uses mentioned in Column II.

Compounds and Their Properties
Compounds and their properties

Column I

Column II

(i)

(a)

Dentistry, ornamental work

(ii)

(b)

Manufacture of sodium carbonate from caustic soda

(iii)

(c)

Manufacture of high quality paper

(iv)

(d)

Used in white washing

Answer:

Question: 43

Match the elements given in Column I with the colour they impart to the flame given in Column II.

Elements and Their Properties
Elements and their properties

Column I

Column II

(i)

(a)

Apple green

(ii)

(b)

Violet

(iii)

(c)

Brick red

(iv)

(d)

Yellow

(v)

(e)

Crimson red

(vi)

(f)

Blue

Answer:

V. Assertion and Reason Type

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

Question: 44

Assertion (A): The carbonate of lithium decomposes easily on heating to form lithium oxide and .

Reason (R): Lithium being very small in size polarizes large carbonate ion leading to the formation of more stable and .

(i) Both A and R are correct and R is the correct explanation of A.

(ii) Both A and R are correct but R is not the correct explanation of A.

(iii) Both A and R are not correct

(iv) A is not correct but R is correct.

Answer: (i)

Question: 45

Assertion (A): Beryllium carbonate is kept in the atmosphere of carbon dioxide.

Reason (R): Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide.

(i) Both A and R are correct and R is the correct explanation of A.

(ii) Both A and R are correct but R is not the correct explanation of A.

(iii) Both A and R are not correct.

(iv) A is not correct but R is correct.

Answer: (i)

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