(a) What do the letters p.d. stand for?

(b) Which device is used to measure p.d.?

Which of the following statements correctly defines a volt?

(a) a volt is a joule per ampere.

(b) a volt is a joule per coulomb.

By what other name is the unit joule/coulomb called?

The volume of a right circular cone is $9856 cm^3$. If the diameter of the base is 28 cm. Find slant height of the cone?

What are the types of simple permanent tissue?

Deficiency of iron leads to-

(a) anaemia (b) goitre (c) marasmus (d) rickets

Mr. Sharma is paid an hourly rate. One week he earned Rs.15750 by working 30 hours. If he works 35 hours next week, how much will he earn?

The temperature at the foot of a mountain is $+$ 8°C. It fell down by 10°C at the top of the mountain. The temperature recorded at the top is?

The sides of certain triangles are given below. Determine which of them are right triangles.

(i) $a\ =\ 7\ cm,\ b\ =\ 24\ cm$ and $c\ =\ 25\ cm$

If the sides of a triangle are 3 cm, 4 cm, and 6 cm long, determine whether the triangle is a right-angled triangle.

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