Your sister has become uncommunicative. She prefers to remain alone.

What will you do if, your sister has become incommunicative and wh prefers to remain alone ? Why ?

Your sister has become incommunicative and prefers to stay alone. What measures would you take to help ? Your sister ?

Use your brain power! In cold countries how do aquatic animals remain alive even after the rivers or lake freeze in winter?

A uniform solid sphere of radius R has a hole of radius R//2 drilled inside it. One end of the hole is at the centre of the sphere while the other is at the boundary. Locate centre of mass of the remaining sphere..

While doing his Ph.D. In plant Taxonomy your friend has come across a plant, which he feels is a new species. How can he confirm the same?

Use your brain power What happens to the energy during its transfer from producers to apex consumers? Does it remain trapped in the apex consumers? Does it remain in the body of apex consumer till its death?

Ragini, a 50 year old office goer, suffered hair line cracks in her right & left foot in short intervals of time. She was worried about mirror jerks leading to hair line cracks in bones. Doctor explained to her why it must be happening and prescribed medicines. What must be cause of Ragini's problem? Why has it occured? What precaustions she should have taken earlier? Why care she should take in future?

Priya has to stitch table clothes and curtains for a living. She has to put in 1 hour of work for a table cloth and 3 hours for a curtain. She gets ₹ 50 for· every table cloths and ₹ 250 for every curtain. She has to earn a least ₹ 500 per day. Minimize the no of hours of work she has to put in every day.

Choose the correct option? If pressure of air gets doubled, then velocity of sound in air A. gets doubled B. becomes four times C. remains unchanged D. becomes half