## Chemistry Aptitude Quiz

IIT JEE exam which consists of JEE Main and JEE Advanced is one of the most important entrance exams for engineering aspirants. The exam is held for candidates who are aspiring to pursue a career in the field of engineering and technical studies. Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything..

Q1.  _7^14 N+ _0^1 n→ _6^14 C+ _1^1 His written as
•   _7^14 N (n,e) _1^1 H
•   _7^14 N (p,n) _6^14 C
•   _7^14 N (n,p) _6^14 C
•   _6^14 C(p,n) _7^14 N
Solution
(c)
Neutron is absorbed (n)
Proton is released (p)
_7^14 N(n,p) _6^14 C

Q2.Rutherford’s scattering experiment is related to the size of the
•  Nucleus
•  Atom
•  Electron
•  Neutron
Solution
(a)
According to Rutherford’s model of atom, an atom consists of a positively chargedheavy part called nucleus where most of the mass of the atom is concentrated. Protons and neutrons are present in the nucleus. Size of the nucleus is very small compared to the size of the atom
Around the nucleus, there is extranuclear part in which there are electrons
Electrons revolve around the nucleus in circular orbit like planets around the sun and they are called planetary electrons

Q3.  Which of the radioactive isotopes is used for temperature control in blood disease?
•  P^32H^3
•  H^3
•  Rn^233
•  I^131
Solution
Part A
Q4.   A cyclotron is used to
•  Accelerate neutrons
•  Accelerate electrons
•  Accelerate protons
•  Accelerate Î±-particles
Solution

Part Copt-right
Q5.Heisenberg’s uncertainty principle rules out the exact simultaneous measurement of:
•  Probability and intensity
•  Energy and velocity
•  Position and velocity
Solution
Part D opt-right

Q6. The sum of the number of neutrons and proton in the isotope of hydrogen is
•  6
•  5
• 4
•  3
Solution
(d)
H_1^2 ; T_1^3

Q7.Which of the following is not an example of ionizing radiation?
•  X-rays
•  Î³- rays
•  Î±- rays
•  UV-rays
Solution
Part D

Q8.An isotope of _32 Ge^76 is
•   _32 Ge^77
•   _33 As^77
•  _34 Se^77
•  _34 Se^78
Solution
(a)
Atoms having same number of protons are called isotopes opt-right

Q9.Of the following nuclides, the one most likely to decay by positron (Î²^+ )emission is
•   ^59 Cu
•   ^63 Cu
•   ^67 Cu
•   ^68 Cu
Solution
Part A

Q10. In vivo studies, radioisotope used is
•  Cr-51
•  Co-60
•  Na-24
• P-32
Solution
Part A

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