${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়

${\mathrm{CaCO}}_3 \stackrel{∆}{\to } \mathrm{CaO} + {\mathrm{CO}}_2$

${\mathrm{H}}_2 + {\mathrm{O}}_2 \to {\mathrm{H}}_2\mathrm{O}$

$\mathrm{NaOH} + \mathrm{HCI} \to \mathrm{NaCl} + {\mathrm{H}}_2\mathrm{O}$

কোনটিই নয়