Please select a subject first
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Write one sentence using the following term pertaining to reproduction in humans.
Head first
Concept: undefined >> undefined
Write one sentence using the following term pertaining to reproduction in humans.
After-birth
Concept: undefined >> undefined
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Write one sentence using the following term pertaining to reproduction in humans.
Tied and cut
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Name these:
3 membranous, protective layers around the foetus.
Concept: undefined >> undefined
Distinguish between the following pair:
Implantation and gestation
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Distinguish between the following pair:
Pregnancy and parturition
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Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.
Concept: undefined >> undefined
Name:
a compound containing zinc in the anion
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You are provided with two reagent bottles marked A and B. One of which contains NH4OH solution and the other contains NaOH solution. How will you identify them by a chemical test?
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What do you understand by the following:
Analysis
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What do you understand by the following:
Qualitative analysis
Concept: undefined >> undefined
What do you understand by the following:
Reagent
Concept: undefined >> undefined
What do you understand by the following:
Precipitation
Concept: undefined >> undefined
Z is a compound. With dilute HCl it gives a gas turning dichromatic solution green. Z gives lilac flame. Name Z.
Concept: undefined >> undefined
State what do you observe when:
Sulphur burns.
Concept: undefined >> undefined
State what do you observe when:
Ethane is bubbled through a solution of bromine in tetrachloromethane (carbon tetra chloride).
Concept: undefined >> undefined
Write the observation, and balanced equation for the following reaction:
A paper dipped in potassium permanganate solution is placed at the mouth of a test tube, containing sulphur dioxide gas.
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Match the following :
| Column A | Column B |
| 1. A substance that turns moist starch iodide paper blue. |
A. Ammonium sulphate |
| 2. A compound which releases a reddish brown gas on reaction with concentrated sulphuric acid and copper turnings. |
B. Lead carbonate |
| 3 . A solu tion of this compound gives a dirty green preci pi ta te with sodium hydroxide. |
C. Chlorine |
| 4 . A compound which on heating with sodium hydroxide produces a gas which forms dense white fumes with hydrogen chloride. |
D. Copper nitrate |
| 5 . A white solid which gives a yellow residue on heating. |
E. Ferrous sulphate |
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Identify the substance P based on the information given below:
The deliquescent salt P, turns yellow on dissolving in water, and gives a reddish brown precipitate with sodium hydroxide solution.
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Identify the substance ‘R’ based on the information given below:
The pale green solid ‘R’ turns reddish brown on heating. Its aqueous solution gives a white precipitate with barium chloride solution. The precipitate is insoluble in mineral acids.
Concept: undefined >> undefined
