1 ) Isobars means compounds having same no. of . . . . . . . . . . . . . . . . : -
A ) protons ,
B ) neutrons ,
C ) both , D ) None of these .
Correct
answer : - C ) both ,
Isobars
: - same no. of ( protons + neutrons ) .
Isotones
: - same no. of neutrons .
Isotopes
: - same no. of protons .
2 )
Speed of sound in hot is . . . . . . . . . . . . . . . . . . . cold .
A ) greater than ,
B ) smaller than ,
C ) equal to ,
D ) None of these .
Correct
answer : - A ) greater than ,
3 )
When an electron is in excited state , return to ground state , so what type of
electromagnetic radiations are produced ?
A ) alpha ,
B )
beta ,
C ) gamma ,
D ) All of these .
Correct
answer : - C ) gamma ,
Alpha
: - They are He - nuclie praticals , not radiations .
Beta
: - They are electrons . They are beta radiations , not an electromagnetic
radiations .
Gamma
: - Gamma rays are Electromagnetic radiations , so re - excite , it produces
electromagnetic waves .
But
atom emits x - rays , not r - rays .
r -
rays are emitted by nucleus . Although X - rays and r - rays both are
electromagnetic rays .
4 )
In a nucleic reactions , is it possible to transform an element into another ?
A ) Yes , B ) No ,
C ) may or may not ,
D ) None of these
.
Correct
answer : - A ) Yes ,
Yes
we can transform an element into another as parent to daughter .
5 )
If a material has super conducting property at temperature T1 and T2 , Then T1
and T2 are less than some . . . . . . . . . . . . . . . . ,
A ) absolute temperature , B ) critical temperature ,
C ) zero temperature
, D ) None of these .
Correct
answer : - B ) critical temperature ,
6 )
According to Faraday , electric field lines go from . . . . . . . . . . . . . .
,
A ) negative to positive
, B ) positive to negative ,
C ) positive to positive
, D ) None of these .
Correct
answer : - B ) positive to negative
,
Now go to online quiz section and Physics Quiz 10 is uploaded related to these mcqs , so check your preparation by this link : -
