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प्रश्न
Write the names of the elements present in the:-
Glucose
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उत्तर
Glucose : Carbon, hydrogen, oxygen.
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संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
WRITE SHORT ANSWER
Name three inert gases.
Write the names of the elements present in the following compound.
Common salt
Define: Chemical bond
Who originated the word ‘atom’ ?
What is an atom ? How do atoms usually exist ?
Which has more atoms, 50 g of aluminium or 50 g of iron ? Illustrate your answer with the help of calculations.
(Atomic masses : Al = 27 u ; Fe = 25 u)
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
The electron shell ______ is nearest to the nucleus.
Draw the electron dot structure of this compound.
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
The smallest particle of matter that can exist by itself is ______.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
State true or false. If false, correct the statement.
An atom is electrically neutral.
Define the following term with an example.
Non-metal
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
1 mole of Gold and Silver contain same number of atoms.
Does the solubility of a substance change with temperature? Explain with the help of an example.
The ______ are combination of atoms of various elements or the same element.
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 ______.
