SSLC (English Medium) इयत्ता ९ - Tamil Nadu Board of Secondary Education Question Bank Solutions

In which stage of mitosis the chromosomes align in an equatorial plate? How?

State whether true or false. If false, correct the statement.

Glomerular filtrate consists of many substances like amino acids, vitamins, hormones, salts, glucose and other essential substances.

Explain the structure of nephron.

Explain the structure of kidney and the steps involved in the formation of urine

Assertion: Urea is excreted out through the kidneys.

Reason: Urea is a toxic substance.

Food and Adulteration Act was enforced by Government of India in the year ______.

What is an adulterant?

What are the effects of consuming adulterated food?

Higher Order Thinking Skill.

The doctor advices an adolescent girl who is suffering from anaemia to include more of leafy vegetables and dates in her diet. Why so

Explain the dangers of electricity and precautions to be taken while handling electricity.

A ray of light as it travels from medium A to medium B refractive index of the medium B relative to medium A is (μB/ μA) ______.

The pencil appears to be bent at the surface of the water due to refraction.

Give two examples of transparent mediums that are denser than air.

A coin in a glass beaker appears to rise as the beaker is slowly filled with water why?

Human beings cannot hear ______.

The frequency greater than 20,000 Hz is ______ sound.

Sonar is a device that uses to ______ measure the distance, direction, and speed of underwater objects.

Ultrasounds can also be used to detect cracks and flaws in ______.

Ultrasonic sounds cannot be heard by Human beings.

Mention the frequency ranges of infrasonic and ultrasonic.