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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

A compound containing one atom of carbon and two atoms of oxygen is ______. - Science

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प्रश्न

A compound containing one atom of carbon and two atoms of oxygen is ______.

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उत्तर

A compound containing one atom of carbon and two atoms of oxygen is CO2 

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पाठ 3: Matter Around Us - Evaluation [पृष्ठ ३८]

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सामाचीर कलवी Science - Term 1 [English] Class 7 TN Board
पाठ 3 Matter Around Us
Evaluation | Q II. 2. | पृष्ठ ३८

संबंधित प्रश्‍न

WRITE SHORT ANSWER

What is radioactivity?


WRITE SHORT ANSWER

Name three inert gases.


Write the names of the elements present in the following compound.

Common salt


Write the names of `"FeS"` compounds :


Define: Chemical bond


Define: Mass number


What is the maximum number of electrons present in:

1. first shell
2. second shell
3. third shell and
4. fourth shell


Give two examples for each of ionic and covalent bond.


How did Neils Bohr visualise the atom ?


An atom has 13 protons and 14 neutrons.

What is the atomic number of the atom ?


An atom has 13 protons and 14 neutrons.

How many electrons would be present in this atom ?


Fill in the blank

If an atom loses an electron, it acquires ______ a charge.


Fill in the blank

An _______ is electrically neutral.


Write the full form of IUPAC.


Name the unit in which the radius of an atom is usually expressed.


Is it possible to see atoms these days ? Explain your answer.


For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

Which will form positive ion?


Draw the basic structure of an atom representing its –

  1. Subatomic particles
  2. Nucleus
  3. Orbits or shells.

Rewrite the given sentence in correct form.

Elements contain two or more kind of atoms and compounds contain only one kind of atom.


Assertion: An atom is electrically neutral.

Reason: Atoms have equal number of protons and electrons.


Define – Atom.


Define the term ions or radicals.


In the nucleus of `""_20"Ca"^40`, there are ______


1 mole of Gold and Silver contain same number of atoms.


A change in the physical state can be brought about


An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.


What is the fundamental particle of an element?


Atoms have a radius of the order ______.


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