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प्रश्न
Fill in the blank
The most abundant element in the atmosphere is _______.
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उत्तर
The most abundant element in the atmosphere is nitrogen.
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संबंधित प्रश्न
Name a soft metal.
Fill in the blank
A pure substance has definite.................. and constant ..............
Define: Compounds
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
State the number of atoms of CaCO3
Indicate whether the following statement is true or false:
Ozone is a triatomic molecule
Select the correct answer from A, B, C, D & E for the statement given below :
A noble gas.
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
