Chemistry

Coal gasification technology can be used in production of how many of ethanol, nitroglycerine and urea?

Water can dissolve more substances than any other liquid because

‘Triclosan’, considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

It is possible to produce algae based biofuels, but what is/are the likely limitation(s) of developing countries in promoting this industry? 1. Production of algae based biofuels is possible in seas only an not on continents 2. Setting up and engineering the algae based biofuel production requires high level of expertise/technology until the construction is completed. 3. Economically viable production necessitates the setting up of large scale facilities which may rise ecological and social concerns Select the correct answer using the codes given below

Consider the following pairs : Commonly used/ Unwanted or consumed materials controversial chemicals likely to be found in them 1. Lipstick — Lead 2. Soft drinks — Brominated vegetable oils 3. Chinese fast food — Monosodium glutamate Which of the pairs given above is/are correctly matched?

Which of the following is/are the example/examples of chemical change? 1. Crystallization of sodium chloride 2. Melting of ice 3. Souring of milk