SSC (English Medium) इयत्ता १० वी - Maharashtra State Board Question Bank Solutions for Science and Technology 2

Explain the following concept in short:

Acrocentric chromosome

Give a scientific reason.

Why it is essential to get training of first aid?

I am the V shaped chromosome with central centromere and equal chromatid arms. What is my name?

Give scientific reason.

Cell division is one of the important properties of cells and organisms.

Give scientific reasons.

Cell division is one of the important properties of cells and organisms.

Ethanoic acid has a .................... odour.
(a) Rotten eggs
(b) Pungent
(c) Vinegar-like
(d) Mild

The molecular formula of acetic acid is _________ .
(a) CH₃COOH
(b) CH₃ – CH₃
(c) C₆H₆
(d) C₂H₄

Choose the correct alternative and rewrite the following: 

Acetic acid ..................

When zinc powder is added to acetic acid ______________

(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom

Genetic recombination occurs in ______ phase of prophase of meiosis-I.

All chromosomes are arranged parallel to equatorial plane of cell in ______ phase of mitosis.

For formation of plasma membrane, ______ molecules are necessary.

With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.

Identify me.

Though I am multicellular, there are no tissues in my body. What is the name of my phylum?

Which special cells are present in the body of sponges (Porifera)?

Write a note.

Mock drill

Explain that why is it said like that?

Mock drill is useful.

Ethanoic acid _________.

Choose the correct alternative and rewrite the following:

Some acetic acid is treated with solid NaHCO3, the resulting solution will be _________________.

Rewrite the following statement by selecting the correct option.
The formula of ethanoic acid is _____________.