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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
- The element having atomicity 'four' is most likely to be :
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- If 1.4 g of calcium oxide is formed by the complete decomposition of c...
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- The law of constant proportions was given by
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- Out of ozone, phosphorus, sulphur and krypton, the elements having the...
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- One nm is equal to :
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- The scientist who proposed the first letter (or first letter and anoth...
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- The atoms of which of the following pair of elements are most likely ...
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- Which of the following elements has the same molecular mass as its ato...
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- In water, the proportion of oxygen and hydrogen by mass is :
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- In hydrogen peroxide (H(2)O(2)), the proportion of hydrogen and oxyg...
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- The symbols of the elements cobalt, aluminium, helium and sodium respe...
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- Copper sulphate reacts with sodium hydroxide to form a blue preci...
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- Potassium chlorate decomposes, on heating, to form potassium chlori...
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- In an experiment, 4.90 g of copper oxide was obtained from 3.92 g of...
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- Magnesium and oxygen combine in the ratio of 3 : 2 by mass to for...
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- When 5g of calcium is burnt in 2g of oxygen, then 7 g of calcium o...
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- An liquid compound X of molecular mass 18 u can be obtained from a n...
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- One of the forms of a naturally occurring solid compound P is usually...
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- What do we call those particles which have more or less electrons t...
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- What do we call those particles which have : (a) more electrons ...
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