Toggle navigation
Terms & Conditions
Contact
Home
GK
Computer
TRB
TNPSC
Aptitude
English
Reasoning
Technical
Bank Exams
SSC
Engineering
Puzzles
Interview
GD Topics
Blogs
Online Test
Free tnpsc model questions Online Test - MeritNotes
Home
Online Exam
No. of Questions :10
Remaining Time :
1. Positive rays of the same element produces two different traces in a Bainbridge mass spectrometer. The positive ions have
(a)
different mass with same velocity
(b)
different mass with different velocity
(c)
same mass with same velocity
(d)
same mass with different velocity
2. Atoms of an element containing the same number of protons but different number of neutrons are called
(a)
Isomers
(b)
Isotones
(c)
Isobars
(d)
Isotopes
3. In pressurised heavy water reactors _____ is used as fuel.
(a)
thorium oxide
(b)
plutonium oxide
(c)
polonium oxide
(d)
uranium oxide
4. Radioactive elements radium and polonium were discovered by
(a)
Bothe and Becker
(b)
Joliot and Curie
(c)
Chadwick
(d)
Marie Curie and Pierre Curie
5. The fast neutrons can be turned to slow neutrons using
(a)
reflectors
(b)
converters
(c)
moderators
(d)
control rods
6. One Fermi is equal to
(a)
10
-5
m
(b)
10
-10
m
(c)
10
-15
m
(d)
10
-20
m
7. 1 Becquerel = _____ disintegrations per second.
(a)
one
(b)
two
(c)
three
(d)
four
8. The GM tube is filled with ______ at low pressure.
(a)
Vacuum
(b)
Mercury
(c)
Sodium
(d)
Argon
9. Control rods are used to
(a)
initiate the chain reaction
(b)
reflect the escaping neutrons back into the reactor
(c)
control chain reaction
(d)
slow down the fast neutrons
10. The process in which a nucleus of one element is converted into nucleus of another element is
(a)
nuclear reaction
(b)
chemical reaction
(c)
physical reaction
(d)
thermal reaction
