The positive ion is known as

  • cation
  • anion
  • positron
  • negatron

The symbol of "Hydrogen" is

  • H
  • He
  • Na
  • Hy

When "Uranium-238" is bombarded with neutrons, it produces

  • heat
  • electricity
  • nuclear energy
  • light

Some nuclear power plants use an artificial isotope instead of uranium. This isotope is known as

  • Plutonium-239
  • Platinum-198
  • Einsteinium-252
  • Titanium-48

Gamma rays are also used to check the

  • strength of metals
  • properties of metal
  • thickness of metal
  • all of them

Gamma rays are used to detect

  • faults in human body
  • faults in metals
  • thieves and robbers
  • weapons

A charged atom is called

  • ion
  • charger
  • positron
  • negatron

The two isotopes of carbon are

  • carbon-11 and carbon-13
  • carbon-13 and carbon-15
  • carbon-6 and carbon-7
  • carbon-13 and carbon-14

The shells are arranged around nucleus according to their

  • size
  • shape
  • energy level
  • mass

The number of bonds an atom can form is called

  • power of atom
  • valency of atom
  • strength of atom
  • capacity of atom

The more the neutrons in an atom, the

  • lighter it is
  • heavier it is
  • brighter it is
  • cooler it is

The ionic chemical formula of hydrogen is

  • H-
  • H+
  • H-
  • H+

The radiation is released in a process known as

  • radioactive explosion
  • radio decay
  • radioactive decay
  • radiation release

A largest occurring atom in the period table yet known is that of

  • titanium
  • platinum
  • uranium
  • plutonium

The valency of carbon is

  • 2
  • 4
  • 6
  • 8

The number and arrangement of electrons in an atom are important because it controls

  • the physical properties of atom
  • the chemical properties of atom
  • the size of atom
  • all of above

The particles which have equal mass are

  • protons and electrons
  • protons and neutrons
  • neutrons and electrons
  • photons and protons

The rays that can penetrate into metal are

  • x-rays
  • ultra violet rays
  • gamma rays
  • radio waves

The symbol of 'neon gas' is

  • Ne
  • Na
  • N
  • Mg

At room temperature, ionic bonds are

  • gas
  • solids
  • liquids
  • semi solids

Medical instruments can be sterilized using

  • heat
  • boiled water
  • radiations
  • energy

Sodium and chlorine are attracted to each other because they are

  • ions
  • positively charged
  • negatively charged
  • oppositely charged

The nearest shell to a nucleus is called

  • shell A
  • shell K
  • shell S
  • shell C

The number of elements are approximately

  • fifty
  • eighty
  • hundred
  • two hundred

Atoms are linked together by chemical bonds. The two common chemical bonds are

  • ionic and dative bonds
  • ionic and covalent bonds
  • dative and covalent bonds
  • ionic and metallic bonds

The symbol of 'magnesium' is

  • Ne
  • Na
  • N
  • Mg

Carbon dioxide contains

  • ionic bonding
  • covalent bonding
  • metallic bonding
  • dative bonding

Actually, the particle that makes difference in atoms is

  • neutron
  • proton
  • electron
  • photon

All bonding involve

  • protons
  • neutrons
  • electrons
  • positrons

To study the changes that occur during photosynthesis,

  • carbon-12 is added to carbon dioxide
  • carbon-13 is added to carbon dioxide
  • carbon-14 is added to carbon dioxide
  • carbon-14 is added to carbon monoxide
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