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प्रश्न
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
विकल्प
(i), (ii) and (iii)
(i), (iii) and (iv)
(ii), (iii) and (iv)
(i), (ii) and (iv)
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उत्तर
(i), (ii) and (iv)
Explanation -
Dalton’s atomic theory successfully explained law of conservation of mass, law of constant composition and law of multiple proportion
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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 |
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
What does an atom consist of ? Explain.
Define: Covalent bond
State Dalton’s atomic theory.
What value has been given to the mass of this reference atom ?
What is the contribution of the following in atomic structure?
Maharshi Kanada
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Turns moist starch iodide paper blue black.
Draw the diagrams representing the atomic structures of the following: Neon
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
What will be the charge present of the molecule XY after chemical combination?
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
Define the following term with an example.
Element
The basic unit of matter is ______.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
Name the sub-atomic particles.
Define the following term with an example.
Metal
1 mole of Gold and Silver contain same number of atoms.
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 ______.
Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement II: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below:
