SSLC (English Medium) Class 10 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

How does the property vary in periods and in groups?

Polar compounds are soluble in _____ solvents

Solutions which contain three components are called a binary solution.

In a solution, the component which is present in a lesser amount is called the solvent.

Vinu dissolves 50 g of sugar in 250 ml of hot water, Sarath dissolves 50 g of the same sugar in 250 ml of cold water. Who will get a faster dissolution of sugar? and Why?

The molecular formula of an open-chain organic compound is C3H6. The class of the compound is ______

The IUPAC name of an organic compound is 3-Methyl butan-1-ol. What type of compound it is?

An organic compound ‘A’ is widely used as a preservative and has the molecular formula C₂H₄O₂. This compound reacts with ethanol to form a sweet-smelling compound ‘B’.

Identify the compound ‘A’.

The innermost layer of the cortex in the root is called ______.

Xylem and phloem are arranged in alternate radii constitute a vascular bundle called ______.

Name the three basic tissues system in flowering plants.

Arjun is studying in the tenth standard. He was down with fever and went to meet the doctor. As he went to the clinic he saw a patient undergoing treatment for a severe leech bite. Being curious, Arjun asked the doctor why leech bite was not felt as soon as it attaches to the skin? What would have been the reply given by the doctor?

Leeches do not have an elaborate secretion of digestive juices and enzymes - Why?

Name the conditions when both the alleles are identical?

A garden pea plant produces axial white flowers. Another of the same species produced terminal violet flowers. Identify the dominant trait?

What do you understand by the terms phenotype and genotype?

A pure tall plant (TT) is crossed with the pure dwarf plant (tt), what would be the F₁ and F₂ generations? Explain.

Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in the F₁ generation are then selfed to produce F₂ generation of pea plants.

What do the plants of the F₁ generation look like?

Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in the F₁ generation are then selfed to produce F₂ generation of pea plants.

What is the ratio of tall plants to dwarf plants in the F₂ generation?

Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in the F₁ generation are then selfed to produce F₂ generation of pea plants.

Which type of plants was missing in the F₁ generation but reappeared in the F₂ generation?