PART - 2 CH - 6 Control and Coordination — Science STD 10 — Question

The absolute refractive indices of three substances A, B and C are 1.33, 1.65 and 1.46 respectively. In which substance is the speed of light maximum?

Which of the following is not a unit of electric energy?

In the agricultural farm with wheat crop, snake, peacock, kite, rat, etc. occur in food chain. Pesticides are spray regular time interval. Which of the following animal has lowest concentration of pesticides?

When reddish brown copper metal is heated, it forms a black solid surface. Which of the following statement is incorrect?

Find correct statements for the concept of sustainable development.

Where should an object be placed to obtain its image as real, inverted and of the same height as the object by a convex lens?

Who discovered the magnetic effect of an electric current?

Which gland is stimulated to release its secretion in a scary situation in squirrels?

Which of the following brings oxygenated blood into left atrium in heart?

The atomic number of an element is 20. In modern periodic table, this element is placed in..............