List of top Science Questions

Draw the structure of a nerve cell and describe its functions.

Symbols of few components used in electrical circuits are given in column A. Match with names given in column B and choose the correct option:

Describe the structure of human heart with the help of a suitable diagram.
Describe sexual reproduction in the flowering plants.

Write IUPAC names of the following compounds:

Write IUPAC names of the following compounds: 

In the given circuit, find the equivalent resistance between A and B and potential difference between the ends of the 5 \(\Omega\) resistance.
Describe sex determination process in human beings with diagram.
Define Phototropism and Geotropism with the help of suitable diagrams.

In the given circuit, find: 
(i) Total resistance 
(ii) Current through the cell, and 
(iii) Potential difference across 0.8 \(\Omega\) resistance. 

Explain clearly the arrangement for a domestic electric circuit with the help of a diagram.
Describe Regeneration and Budding with diagram.

(i) What is a neutralisation reaction? Write its two examples. 
(ii) Explain roasting with an example. 

Describe the structure and function of nephron in humans.
Describe the structure of the human heart with the help of a labelled longitudinal section diagram of the human heart.
Draw a labelled diagram of structure of Neuron and describe its functions.
Describe the female reproductive system of human beings with a diagram.
Complete the following chemical equation:
CH3COOH + C2H5OH →Conc. H2SO4 ________ + H2O
Describe the food chain and food web with examples.
Write short notes on the following:
(a) Vegetative propagation
(b) Budding
Describe energy flow in an ecosystem with diagram.
Budding:
What is ozone and how does it affect any ecosystem?
Describe the structure and function of the human brain in brief.
Explain the following:
(a) Double decomposition reaction
(b) Neutralization reaction