SSLC (English Medium) इयत्ता १० - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Velocity of sound in a gaseous medium is 330 ms^–1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is

The velocity of sound in air at a particular temperature is 330 ms^–1. What will be its value when temperature is doubled and the pressure is halved?

Velocity of sound in the atmosphere of a planet is 500 ms^–1. The minimum distance between the sources of sound and the obstacle to hear the echo should be

A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is _____.

The velocity of sound is independent of temperature.

The Velocity of sound is high in gases than liquids.

Why does sound travel faster on a rainy day than on a dry day?

Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V₀= 331 ms^–1)

The thunder of cloud is heard 9.8 seconds later than the flash of lightning. If the speed of sound in air is 330 ms^–1, what will be the height of the cloud?

An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.6 seconds. What is the depth of the sea, if the velocity of sound in the seawater is 1400 ms^–1?

A strong sound signal is sent from a ship towards the bottom of the sea. It is received back after 1s. What is the depth of sea given that the speed of sound in water 1450 ms^–1?

Pusa Komal is a disease resistant variety of ______.

Himgiri developed by hybridisation and selection for disease resistance against rust pathogens is a variety of ______.

The miracle rice which saved millions of lives and celebrated its 50th birthday is______.

A protein rich wheat variety is ______.

The scientific process which produces crop plants enriched with desirable nutrients is called ______.

Discuss the method of breeding for disease resistance.

Higher Order Thinking Skill (HOT)

Organic farming is better than Green Revolution. Give reasons

Tobacco consumption is known to stimulate secretion of adrenaline. The component causing this could be ______.

World 'No Tobacco Day' is observed on ______.