Water rises in bent tube in the beaker as KOH present in flask absorbs CO₂ released by respiring seeds and creates vaccum, which results in water rising in the tube.
Water rises in bent tube in the beaker as KOH present in flask absorbs CO₂ released
by respiring seeds and creates vaccum, which results in water rising in the tube.
We obtain a precipitate only when barium chloride solution is added to sodium sulphate solution Barium chloride + Sodium sulphate ⟶ Barium sulphate (ppt.) + Sodium chloride
We obtain a precipitate only when barium chloride solution is added to sodium
sulphate solution
Barium chloride + Sodium sulphate ⟶ Barium sulphate (ppt.) + Sodium chloride
Shubham sets up the apparatus to show that CO ₂is evolved during respiration. After 3 hours he would observe:
Water rises in bent tube in the beaker as KOH present in flask absorbs CO₂ released by respiring seeds and creates vaccum, which results in water rising in the tube.
Water rises in bent tube in the beaker as KOH present in flask absorbs CO₂ released
See lessby respiring seeds and creates vaccum, which results in water rising in the tube.
In the experiment to show that ‘light is necessary for photosynthesis’, the reason for boiling the leaf in alcohol is to:
Alcohol being organic solvent breaks membranes and dissolves chlorophyll so that blue-black colour of starch-iodine complex is clearly noticeable.
Alcohol being organic solvent breaks membranes and dissolves chlorophyll so that
See lessblue-black colour of starch-iodine complex is clearly noticeable.
A wire of resistance R is cut into ten equal parts which are then joined in parallel. The equivalent resistance of the combination
(a) 0.01R
(a) 0.01R
See lessA few pieces of granulated zinc were added to copper sulphate solution in a test tube. After an hour, the colour of the solution changed from:
(d) Zinc reacts with copper sulphate solution (blue) to form zinc sulphate solution (colourless).
(d) Zinc reacts with copper sulphate solution (blue) to form zinc sulphate solution (colourless).
See lessWe will observe a precipitation to occur when:
We obtain a precipitate only when barium chloride solution is added to sodium sulphate solution Barium chloride + Sodium sulphate ⟶ Barium sulphate (ppt.) + Sodium chloride
We obtain a precipitate only when barium chloride solution is added to sodium
See lesssulphate solution
Barium chloride + Sodium sulphate ⟶ Barium sulphate (ppt.) + Sodium chloride