Buy Atomic Structure and Radioactivity

Buy Atomic Structure and Radioactivity
Buy Atomic Structure and Radioactivity
1. Who is regarded as the Father of
Modern Chemistry?
[BPSC (Pre) 2019]
(a) Rutherford (b) Einstein
(c) Lavoisier (d) CV Raman
2. Who among the following proposed
that atom is indivisible? [CDS 2015]
(a) Dalton (b) Berzelius
(c) Rutherford (d) Avogadro
3. A single type of atom is found in
[BPSC (Pre) 2011]
(a) compounds of minerals.
(b) mixture of minerals.
(c) native elements.
(d) None of the above
4. Atoms of different elements have
[SSC CGL 2014]
(a) same atomic number and same
electronic configuration.
(b) different atomic number and same
electronic configuration.
(c) different atomic number and
different number of valence
electrons.
(d) same number of electrons and
neutrons.
5. Which one of the following statements
about an atom is not correct? [CDS 2016]
(a) Atoms of different elements may
have same mass numbers.
(b) Atoms of an elements may have
different mass numbers.
(c) All the atoms of an element have
same number of protons.
(d) All the atoms of an element will always
have same number of neutrons.
6. Which one among the following
statements about an atom is not
correct? [CDS 2012]
Buy Atomic Structure and Radioactivity
(a) Atoms always combine to form
molecule.
(b) Atoms are the basic units from which
molecules and ions are formed.
(c) Atoms are always neutral in nature.
(d) Atoms aggregate in large numbers
to form the matter we can see, feel
and touch.
7. Consider the following statements
I. The positive charge is essentially
immovable because it contains
practically all the mass of the atom.
II. Atom is the smallest indivisible
particles of an element which takes
part in a chemical reaction.
Which of the above Statements is/are
correct? [SSC CGL 2013]
(a) Only I (b) Only II
(c) I and II (d) None of these
8. Which statement(s) is/are correct
regarding Daltons Atomic theory?
I. All matters are made of very tiny
particles.
II. Atoms of different elements have
different masses and chemical
properties.
III. The relative number of atoms is
variable in any compound.
[SSC (10 2) 2018]
Codes
(a) Only I and II (b) Only I and III
(c) Only II and III (d) All I, II and III
9. The absolute value of charge on
electron was determined by
(a) JJ Thomson (b) Rutherford
(c) Priestly (d) RA Millikan
10. When Cathode rays strike a target of
high atomic weight, they give rise to
(a) α-rays (b) β and γ rays
(c) X-rays (d) positive rays
11. Electrons move around the nucleus in
……… motion. [SSC CGL 2017]
(a) translatory (b) spin
(c) orbital (d) vibrational
12. Which of the following is not a
sub-atomic particle? [SSC CGL 2017]
(a) Neutron (b) Proton
(c) Deuteron (d) Electron
13. Nucleus of an atom consists of
[SSC CPO 2016]
(a) proton
(b) neutron
(c) proton and neutron
(d) electron, proton and neutron
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