Which one of the following is the symbol of an element-a CO 2b Cac H 2 Od HCI

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Standard VII

Chemistry

Symbol of an Element

Which one of ...

Question

Which one of the following is the symbol of an element?

(a) CO₂
(b) Ca
(c) H₂O
(d) HCI

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Solution

(b) Ca.
Ca is the symbol of the element calcium.

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Similar questions

Q. Which one of these symbols is not that of an element?

(a) C
(b) Ca
(c) Cu
(d) CO₂

Q. Which of the following reactions is a decomposition reaction?
(a) CaCO₃ ⟶CaO + CO₂
(b) AgNO₃ + NaCl ⟶ AgCl + NaNO₃
(c) CuO + 2HCl ⟶ CuCl₂ + H₂O
(d) C + O₂ ⟶ CO₂

Question 02

Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment?

(a) $C O_{2}$

(b) HI

(d) $S O_{2}$

The product formed in the following reaction will be:

$2 K H C O_{3} + H_{2} S O_{4} \to$

Q. Balance the following equations:

(a) CH₄ + O₂ → CO₂ + H₂O
(b) Na₂O + H₂O → NaOH
(c) Ca(OH)₂ + HCI → CaCI₂ + H₂O
(d) Na + H₂o → NaOH + H₂
(e) Na + CI₂ → NaCI

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Which one of the following is the symbol of an element? (a) CO2 (b) Ca (c) H2O (d) HCI

(b) Ca. Ca is the symbol of the element calcium.

Which one of the following is the symbol of an element?

(a) CO₂
(b) Ca
(c) H₂O
(d) HCI

(b) Ca.
Ca is the symbol of the element calcium.