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

Write the uses of Ceramic.

Write the uses of Radioactive substances. 

______ is used in the treatment of hyperthyroidism.

Where in the industrial field is radioactivity used? 

Fill in the blank and explain.

To discover a sunken ship or objects deep inside the sea, ______ technology is used.

Write scientific reasons.

Limewater turns milky when CO₂ is passed through it. 

Identify the odd one out and justify.

Identify the odd one out and justify.

Write a note on:

Nerve cell

Draw and label the diagram.

Nerve cell

Complete the paragraph.

The milk was on the stove. Rasika was engrossed in watching television. She smelled something burning. She ran towards the kitchen. The milk was boiling over. She held the vessel with her bare hands but, screaming, she let it go at once. This activity was controlled by ______ cells. Special ends of ______ in these cells collected the information, from where it was transferred to the ______ and then towards the terminal end of the ______ The chemicals produced at the terminal end passed through the minute space i.e. ______ In this way, ______ were conducted in the body and the process of ______ was completed by conducting the impulses from ______ to ______.

(Nerve, muscle cell, impulse, dendrite, synapse, axon, reflex action, cell body)

Define the term tissue.

Write the harmful effects.

Radioactive substances 

Explain the concept of tissue culture.

Give example.

Positive radicals

Give example.

Basic radicals

Give example.

Composite radicals

Give example.

Bivalent acidic radicals

Give example.

Trivalent basic radicals

Write symbols of the following elements and the radicals obtained from them and indicate the charge on the radicals.

Mercury, potassium, nitrogen, copper, sulphur, carbon, chlorine, oxygen