Which of the following is/are the source(s) of dust particles in the air?
1. Sea salts
2. Fine soil
3. Pollen
Select the correct answer using the code given below:
2 only
1 and 3 only
1 and 2 only
1, 2 and 3
The atmosphere has a sufficient capacity to keep small solid particles, which may originate from different sources and include sea salts, fine soil, smoke-soot, ash, pollen, dust and disintegrated particles of meteors.
Nine litres are drawn from a cask full of water and it is then filled with milk, Nine litres of mixture are drawn and the cask is again filled with milk, The quantity of water now left in the cask to that of the milk in it is 16 : 9. How much does the cask hold?
Science & Technology · Easy
Sustainable development requires which of the following? 1. Preservation of ecological resources and greater use of renewable resources. 2. Encouragement to the use of environmentally-safe technologies for development purposes. 3. Formulation and implementation of policy framework for people-security and human justice, including ecological and economic security. Select the correct answer using the code given below:
Science & Technology · Easy
Consider the following statements about the Cabinet Mission: 1. Stafford Cripps was the Chairman of the Mission. 2. It supported the cause of Pakistan’s independence. 3. It recommended that provinces will have residuary powers. Which of the statements given above is/are not correct?
Science & Technology · Easy
The identity platform 'Aadhaar' provides open "Application Programming Interfaces (APIs)". What does it imply ? 1. It can be integrated into any electronic device. 2. Online authentication using iris is possible. Which of the statements given above is/ are correct ?
Science & Technology · Easy