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प्रश्न
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
पर्याय
Chalk
Oxygen
Silicon
Bromine
Nitrous oxide
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उत्तर
Nitrous oxide
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संबंधित प्रश्न
Define mixture.
Give Two Examples for Each of the Following: Metalloids
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Vinegar
Define Elements.
Name: Three different forms of carbon
Give one use of the following substance:
Brass
Give reason: A frying pan is made up of steel but its handle is made up of wood.
Find the atomicity of the Following molecule:
Aluminium Suiphide
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
Select the correct answer from the choice given below.
An impure substance
Select the correct answer from the choice given below.
A group of atoms of elements
Who are my companions?
| Group 'A' | Group 'B' |
| 1. Stainless steel | (a) Non-metal |
| 2. Silver | (b) compound |
| 3. Bhajani mixture for milling | (c) Mixture |
| 4. Salt | (d) Element |
| 5. Coal | (e) Alloy |
| 6. Hydrogen | (f) Metal |
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Select the correct answer from A, B, C, D & E for the statement given below :
A noble gas.
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Why are utensils made up of aluminium and brass?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon that shows allotropy.
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
Give the chemical formula for cane sugar.
