An important medical use of nuclear radiations is
activation analysis
carbon dating
radiotherapy
tissue regeneration
Correct answer is C
No explanation has been provided for this answer.
The electron configuration of carbon atom in its excited state is [ 6C]
1s22s 22px12py 1
1s 2 2s 22px 22pyo
1s12s22px12py12pz1
1s 22s12px12py12pz1
Correct answer is D
No explanation has been provided for this answer.
Which of the following alloys does not contain copper? l. Brass II. Bronze III. Steel
l only
ll only
lll only
ll and lll only
Correct answer is C
No explanation has been provided for this answer.
The major product in the solvay process is
NaOH
Na 2CO 3
NH 3
H 2SO4
Correct answer is B
No explanation has been provided for this answer.
A consequence of global warming is
air pollution
flooding
increased humidity
low rainfall
Correct answer is B
No explanation has been provided for this answer.