Classification of Elements & Periodicity in Properties Test 10

Question 1
1 / -0

In the following question 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.
Assertion (A): Atomic number of the element ununbium is 112.
Reason (R): Name for digits 1 and 2 is un- and bi-respectively in latin words.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 2
1 / -0

In the following question 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.
Assertion (A): Second ionization enthalpy will be higher the first ionization enthalpy.
Reason (R): Ionization enthalpy is a quantitative measure of the tendency of an element to lose electron.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 3
1 / -0

In the following question 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.
Assertion (A): Second period consists of 8 elements.
Reason (R): Number of elements in each period is four times the number of atomic orbitals available in the energy level that is being filled.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 4
1 / -0

In the following question 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.
Assertion (A): Alkali metals have least value of ionization energy within a period.
Reason (B): They precede alkaline earth metals in periodic table.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 5
1 / -0

In the following question 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.
Assertion (A): In a triad, the three elements present have same gaps of atomic masses.
Reason (R): Elements in a triad have similar properties.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 6
1 / -0

In the following question 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.
Assertion (A): Atomic size decreases in a period due to increase of atomic number.
Reason (R): The nuclear charge is increasing and size of valence shell remains same as we move from left to right. Hence, in any period, the atomic size of the element decreases from left to right.

A
Both A and R are true and R is the correct explanation of A.

B
Both A and R are true but R is not the correct explanation of A.

C
A is true but R is false.

D
Both A and R are false.

Question 7
1 / -0

In the following question 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.
Assertion (A): Helium is placed in group 18 along with p-block elements.
Reason (R): It shows properties similar to p-block elements.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 8
1 / -0

In the following question 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.
Assertion (A): Smaller the size of an atom greater is the electronegativity.
Reason (R): Electronegativity refers to the tendency of atom so share electrons with other atom.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 9
1 / -0

In the following question 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.
Assertion (A): Electron gain enthalpy can be exothermic or endothermic.
Reason (B): Electron gain enthalpy provides a measure of the ease with which an atom adds an electron to form anion.

A
A. Both A and R are true and R is the correct explanation of A.

B
B. Both A and R are true but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Question 10
1 / -0

In the following question 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.
Assertion (A): According to Mendeleev, periodic properties of elements is a function of their atomic number.
Reason (R): Atomic number is equal to the number of protons.

A
Both A and R are true and R is the correct explanation of A.

B
Both A and R are true but R is not the correct explanation of A.

C
A is true but R is false.

D
A is false but R is true

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Classification ...

Question 1

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 2

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 3

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 4

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 5

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 6

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

Both A and R are false.

Question 7

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 8

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 9

A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Question 10

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true

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