Advertisements
Advertisements
प्रश्न
Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is(are) correct?
- In beakers A and B, exothermic process has occurred.
- In beakers A and B, endothermic process has occurred.
- In beaker C exothermic process has occurred.
- In beaker C endothermic process has occurred.
पर्याय
(i) only
(ii) only
(i) and (iv)
(ii) and (iii)
उत्तर
(i) and (iv)
APPEARS IN
संबंधित प्रश्न
Balance the following chemical equation.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write the balanced chemical equation for the following reaction.
\[\ce{Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water}\]
Balance the given equation:
HNO3 + Ca(OH)2 
Ca(NO3)2 + H2O
Balance the gievn equation:
NaOH + H2SO4 
Na2SO4 + H2O
Balance the given chemical equation:
NH3 → N2 + H2
Balance the following chemical equation :
H2 + O2 → H2O
Write the chemical equation for the following word equation and balance them.
Nitrogen + Oxygen → Nitrogen monoxide
Balance the following equation:
NO2 +H2O → HNO2 + HNO3
Name the fundamental law that is involved in every equation.
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
C2H5OH + 3O2 → 2CO2 + 2H2O
