SSC (Marathi Semi-English) 9th Standard [इयत्ता ९ वी] - Maharashtra State Board Question Bank Solutions for Science and Technology

Explain the difference between a plane mirror, a concave mirror, and a convex mirror with respect to the type and size of the images produced.

Write proper word from the following group of words in the blank.

(magnetism, 4.5V, 3.0V, gravitational attraction, potential difference, potential, higher, lower, 0V)

Water in the waterfall flows from a higher level to the lower level because of ______.

The differences between the electrostatic potential of the positive end the negative end of an electric cell is the ______ of the cell.

Three electric cells of potential difference 1.5 V each have been connected as a battery. The potential differences of the battery will be ____________ V.

Electric cells having 2V potential difference each have been connected in the form of a battery. What will be the total potential difference of the battery in both cases? 

An object moves 18 m in the first 3 s, 22 m in the next 3 s and 14 m in the last 3 s. What is its average speed?

A bullet having a mass of 10 g and moving with a speed of 1.5 m/s, penetrates a thick wooden plank of mass 900 g. The plank was initially at rest. The bullet gets embedded in the plank and both move together. Determine their velocity.

A person swims 100 m in the first 40 s, 80 m in the next 40 s and 45 m in the last 20 s. What is the average speed?

Two samples ‘m’ and ‘n’ of slaked lime were obtained from two different reactions. The details about their composition are as follows: 

• ‘sample m’ mass: 7g
• Mass of constituent oxygen: 2g
• Mass of constituent calcium: 5g
• ‘sample n’ mass: 1.4g
• Mass of constituent oxygen: 0.4g
• Mass of constituent calcium: 1.0g

Which law of chemical combination does this prove? Explain.

Show the dissociation of the following compound on dissolving in water, with the help of a chemical equation and write whether the proportion of dissociation is small or large.

Hydrochloric acid

Show the dissociation of the following compound on dissolving in water, with the help of a chemical equation and write whether the proportion of dissociation is small or large. 

Sodium chloride

Show the dissociation of the following compound on dissolving in water, with the help of a chemical equation and write whether the proportion of dissociation is small or large. 

Potassium hydroxide

Show the dissociation of the following compound on dissolving in water, with the help of a chemical equation and write whether the proportion of dissociation is small or large. 

Ammonia

Show the dissociation of the following compound on dissolving in water, with the help of a chemical equation and write whether the proportion of dissociation is small or large. 

Acetic acid

Show the dissociation of the following compound on dissolving in water, with the help of a chemical equation and write whether the proportion of dissociation is small or large. 

Magnesium chloride

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Copper sulphate

Write note.

Meteorology

Write note.

Monsoon model

Write a note on:

Root pressure

Write a note on:

Transpiration