Atoms and Nuclei Test

Result

Atoms and Nuclei Test - 70

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

statement-I :- Large angle scattering of al-pha Particle led to discovery of atomic nucleus.
state ment-II :- Entire Positive charge of atom is concentrated in the central core.

A
statement -I and II are true. and statement II is correct explanation of statement-I

B
statement -I and II are true, but statement-II is not correct explanation of statement I

C
statement I is true, but state ment II is false.

D
statement I is false but statement II is true
Question 2
4 / -1

Statement-I : 1 amu = 931.48 MeV
Statement-II : It follows form E = mc²

A
statement -I and II are true. and statement II is correct explanation of statement-I

B
statement -I and II are true, but statement-II is not correct explanation of statement I

C
statement I is true, but state ment II is false.

D
statement I is false but statement II is true
Question 3
4 / -1

Statement -I :-half life time of tritium is 12.5 years
Statement-II :- The fraction of tritium that remains after 50 years is 6.25%

A
statement -I and II are true. and statement II is correct explanation of statement-I

B
statement -I and II are true, but statement-II is not correct explanation of statement I

C
statement I is true, but state ment II is false.

D
statement I is false but statement II is true
Question 4
4 / -1

Statement-I :- Nuclei of different atoms have same size
Statement-II :- R=Ro(A)^1/3

A
statement -I and II are true. and statement II is correct explanation of statement-I

B
statement -I and II are true, but statement-II is not correct explanation of statement I

C
statement I is true, but state ment II is false

D
statement I is false but statement II is true
Question 5
4 / -1

Match column I and II and chose correct Answer form the given below.

A
a → p, b → r, c → d, d → q

B
a → d, b → r, c → p, d → a

C
a → q, b → r, c → d, d → p

D
a → r, b → a, c → p, d → a
Question 6
4 / -1

A radioative sample has no active atom at t = o, at the rate of dissntegration at any time is R and the number of atom is N, then ratio. (R/N) varies with time (t) as.

A

B

C

D

Solution
Question 7
4 / -1

The transition the state n = 4 to n = 1 in a hydrogen like atom results in ultraviolet radiation. Infrared radition will be obtained in the transition form

A
3 → 2

B
5 → 4

C
4 → 2

D
2 → 1
Question 8
4 / -1

In Bohr model the hydogen atom, the lowest orbil corresponds to

A
Intinite energy

B
zero energy

C
The minimum energy

D
The maximum energy

Solution
Question 9
4 / -1

Energy levels A , B , C of a certain atom corresponding values of energy i.e. E_A < E_B < E_C. If λ₁, λ₂, λ₃ are wave lengths of radition corresponding to the transition C → B, B → A and C → A. Which of the following is correct

A

B

C

D

Solution
Question 10
4 / -1

According to Bohr\'s theory the radius of electron in an orbit described by Principal quantum number n and atomic number Z, is Proportional to.

A

B

C

D

Solution