Multiple Choice

The formula, $$CaCO_3$$, quantitatively signifies:

AOne molecule of calcium carbonate
Correct Answer
BOne molecule of calcium carbonate is made up of one atom of calcium, one atom of carbon and three atoms of oxygen.
Correct Answer
C100 pars by weight of calcium carbonate [At. wt. Ca = 40, C = 12, O = 16].
Correct Answer
D40 parts by weight of calcium, 12 parts by weight of carbon and 48 parts by weight of oxygen
Correct Answer

Solution

One molecule of calcium carbonate
One molecule of calcium carbonate is made up of one atom of calcium, one atom of carbon and three atoms of oxygen.
$$100$$ pars by weight of calcium carbonate$$ [At. wt. Ca = 40, C = 12, O = 16].$$
$$40$$ parts by weight of calcium, $$12$$ parts by weight of carbon and $$48$$ parts by weight of oxygen

SIMILAR QUESTIONS

d - block and f - block Elements

What are the characteristics of the transition elements and why they are called as transition elements? Which of the d-block elements may not be regarded as the transition elements?

d - block and f - block Elements

How would you account for the increasing oxidising power in the series $$VO_2^+ \lt Cr_2O_7^{2-} \lt MnO_4^-$$?

d - block and f - block Elements

Why are transition elements so named?

d - block and f - block Elements

Elements in which $$4\ f$$ orbitals are progressively filled are called as

d - block and f - block Elements

The ions $$Mg^{+2}$$ and $$PO_4^{-3}$$ combine to form compounds:

d - block and f - block Elements

Which of the following set of elements does not belongs to transitional elements?

d - block and f - block Elements

Which of the following is a transition element?

d - block and f - block Elements

Which one of the following is an example of non typical transition elements?

d - block and f - block Elements

Which of the following transition metal is present in misch metal?

d - block and f - block Elements

Which of the following elements does not belong to the first transition series?

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