SSC (English Medium) १० वीं कक्षा - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Why are geostationary satellites not useful for studies of polar regions?

Complete the following table.

Solve the problem.

How much time a satellite in an orbit at height 35780 km above earth's surface would take, if the mass of the earth would have been four times its original mass?

If the height of a satellite completing one revolution around the earth in T seconds is h₁ meter, then what would be the height of a satellite taking  \[2\sqrt{2} T\] seconds for one revolution?

Considering first correlation, complete the second.
Hubble telescope : At 569 km above the earth’s surface
Orbit of Hubble telescope : .............................

Write the correct option by observing the figures.

Write down what you understood from the following chemical reaction.

AgNO_3(aq) + NaCI_(aq) → AgCI ↓ + NaNO_3(aq)

Mahendra and Virat are sitting at a distance of 1 metre from each other. Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? G = 6.67 x 10^-11 Nm²/kg² 

Write the proper name of the orbits of satellites shown in the following figure with their height from the earth’s surface.

The reaction of iron nail with copper sulphate solution is ______ reaction.

Observe the following diagram and choose the correct alternative:

Write down what you understood from the following chemical reaction.

AgNO_3(aq) + NaCI_(aq) → AgCI ↓ + NaNO_3(aq)

Explain the types of reaction with reference to oxygen and hydrogen. Illustratre with examples.

Write the answer to the following.

Explain the similarity in two events, namely adding NaOH to water and adding CaO to water.

Choose the correct alternative and rewrite the following sentence.

Which of the following is not required to find the pH of a given solution? 

The chemical reactions in which heat is liberated are called endothermic reactions.

A _____________ mirror is used by a dentist.

Grills of doors and windows are always painted before they are used.

(b) State whether the following statements are true or false:

(i) Magnetic poles exist in pairs.

(ii) Global warming is a desirable aspect of the intensified greenhouse effect.