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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Write the names of the elements present in the following compound. Common salt - Chemistry

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प्रश्न

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

Common salt

एक शब्द/वाक्यांश उत्तर

उत्तर

Sodium chloride

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पाठ 4: Atoms, Molecules and Radicals - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 4 Atoms, Molecules and Radicals
Exercise | Q 2.1

संबंधित प्रश्‍न

MATCH THE COLUMNAS

1. Jpham  Dalton a. Neutrons
2. Atom b. Model of the atom
3. Chadwick c.The atomic theory of matter 
4. Rutherfrod d. Positively  charged 
5. Protons e. Electricity neutral 
6. Nuclear  fusion  f. Generator of electricity 
7.Gamma -rays  g. High penetrating power 
  h.Energy in sun 

Write the names of the elements present in the:-

Acetic acid


Write the names of `"Ca"("NO"_3)_2` compounds :


What does the word ‘atom’ mean?


A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.

What is the atomic numebr of X ?


Fill in the blank

If an atom gains an electron, it is called an _______


Fill in the blank

An _______ is electrically neutral.


Fill in the blank

A deficiency of electrons produces a ________ charge.


Write the full form of IUPAC.


How is the size of an atom indicated ?


Why is it not possible to see an atom even with the most powerful microscope ?


What is an atom ? How do atoms usually exist ?


One nm is equal to :


Which of the following statement is correct about the atom of an element ?


Find the mass of 2 moles of nitrogen atoms.


Name the gas that.

Turns moist starch iodide paper blue black.


K: Potassium:: C: ______.


An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.


Atoms have a radius of the order ______.


A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let Sn be the distance travelled by the block in the interval t = n – 1 to t = n. Then, the ratio `S_n/(S_(n + 1))` is ______.


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