the human eye and the colourful world — Science STD 10 — Question

State what would happen to the direction of rotation of the coil of an electric motor, if the direction of the current flowing through the coil is reversed.

Name two elements which formed compound on which Mendeleev had concentrated.

Define the term 'Power of accommodation' of the human eye.###What is accommodation power of the human eye?

In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.

Where is auxin synthesised and where does it diffuses?

Find correct sequence for the expression of tall trait in pea plant.
(a) A lot of hormone will be made
(b) A gene provides information for protein
(c) A hormone triggers the growth in height
(d) An enzyme works efficiently

Name of instrument used to measure blood pressure.

Sudha finds that a sharp image of the windowpane of her science laboratory is formed at 15 cm from the lens. She now tries to focus the building visible to her outside the window instead of the windowpane without disturbing the lens. In which direction will she move the screen to obtain a sharp image of the building? What is the approximate focal length of this lens?

Why regeneration is not the same as reproduction?