List of top Science Questions on Chemical Reactions and Equations asked in Bihar Board X

Write three information obtained from chemical equation.
Which type of reaction is respiration ?
Which of the following reactions is an example of decomposition reaction ?
\( \text{CaCO}_3 (s) \rightarrow \text{CaO} (s) + \text{CO}_2 (g) \) is what type of reaction?
What is the color of silver iodide?
Which of the following equations is balanced?
Why is it necessary to balance a chemical equation?
The above reaction is an example of a: \[ \text{Zn} + \text{CuSO}_4 \rightarrow \text{ZnSO}_4 + \text{Cu} \]
When magnesium ribbon is ignited, the flame produced by it is:
Zn + CuSO$_4$ $\rightarrow$ ZnSO$_4$ + Cu, the above reaction is an example of:
When magnesium ribbon is ignited, the flame produced by it is:
What is the difference between displacement and double displacement reactions? Write equations for these reactions.
Write the balanced chemical equations for the following reactions:
(a) Zinc + Silver nitrate → Zinc nitrate + Silver
(b) Sodium + Water → Sodium hydroxide + Hydrogen.
CaCO\(_3\)(s) → CaO(s) + CO\(_2\)(g) is what type of reaction?
Which of the following equations is balanced?
What is the colour of silver iodide?
$\mathrm{Fe_2O_3 + 2Al \rightarrow Al_2O_3 + 2Fe$ is which of the following types reaction?}
Which one of the following reactions occurs in the formation of curd from milk?
Which of the following is a heterogeneous compound?
The reaction in which ions are exchanged is called:
Which of the following equations is \emph{not balanced?}