List of top Science Questions

What are the trophic levels? Give an example of a food chain and state the different trophic levels in it.
Write a short note on the following:
(i) Importance of pH in daily life
(ii) Micelle
(iii) Metals and Non-metals
Describe co-ordination in plants with examples.
(ii) Why fuse is used in domestic electrical circuits?
ii) Write IUPAC names for the following compounds:
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(i) Draw magnetic lines of force due to a current carrying solenoid.
(iii) State the law to find the direction of magnetic field produced due to straight current carrying wire.
(i) Explain Corrosion. Write its two examples.
(ii) What do you understand by the heating effect of electric current? In a heater of resistance \(10 \, \Omega\), a current of \(15 \, \text{A}\) is flowing for 30 minutes. What will be the amount of heat produced in the heater?
(i) State Ohm's law. What will be the value of current and potential difference at the ends of each resistance in the given circuit?
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(ii) Mention two factors which affect the magnetic field produced by a straight current carrying conductor.
(i) Mention any two properties of magnetic field lines.
(i) Clarify the meaning of power of accommodation of eye lens of human eye. Where is the image formed by the eye lens?
Which of the following is an animal hormone?
Physical factor of ecosystem is:
Chlorophyll is important
Which of the following is top carnivore?
The technique of producing many plants from a single plant under infection-free condition is called—
Dialysis is related to:
The bond in diatomic molecule of Nitrogen is:
Formula for Baking Soda is:
Homologous series among the following is:
A six carbon molecule, Glucose is broken down into a three carbon molecule, Pyruvate. This process takes place:
Unsaturated hydrocarbon from the following is:
Chemical reaction:
\text{Fe(s) + CuSO}_4\text{(aq)} \rightarrow \text{FeSO}_4\text{(aq)} + \text{Cu(s)}
What type of reaction is this?