You are provided with three watch glasses containing milk, petrol and mustard oil, respectively. Suppose you bring a burning candle near these materials one by one, which material(s) will catch fire instantly and why?

You are provided with the following materials— turmeric, honey, mustard oil, water, glucose, rice flour, groundnut oil. Make any three pairs of substances where one substance is soluble in the other and any three pairs of substances where one substance remains insoluble in the other substances.

You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?

You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solutions and a basic solution , respectively . If you are given only red litmus paper, how will you identify the contents of each test tube ?

You have been provided with three test tubes . One of them contains distilled water and the other two contain an acidic solution and a basic solution , respectively . If you are given only red litmus paper , how will you identify the contents of each test tube ?

You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus solution, how will you identify the contents of each test tube ?

You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution respectively. If you are given only red litmus paper, how will you identify the contents of each test tube ?

For a developmental project, logs of wood and other building material have to ve carried to the upper floor of building under renovation by the labour. Alternatively elevators and lifts can do the job which one will you choose and why ?

You have seen homes, shops and factories caught in fire news, or in newspaper, or in real. Do you think how can the fire be controlled from spreding? Generally, water is used to control fire. Water brings down the temperature of the combustible substance below its ignition temperature. The water vapour surrounds the combustible material, thus helping in cutting off the supply of air. Fire produced by the burning of oil or petrol cannot be controlled by throwing water on it because water being heavier than oil, settles down the oil and oil continues to burn. In the case of fires caused by burning liquid fuels, such as kerosene oil can be controlled by throwing sand or soil over it. Read the below questions and try to answer them. What should you do if you use a carbon dioxide fire extinguisher?

You have seen homes, shops and factories caught in fire news, or in newspaper, or in real. Do you think how can the fire be controlled from spreding? Generally, water is used to control fire. Water brings down the temperature of the combustible substance below its ignition temperature. The water vapour surrounds the combustible material, thus helping in cutting off the supply of air. Fire produced by the burning of oil or petrol cannot be controlled by throwing water on it because water being heavier than oil, settles down the oil and oil continues to burn. In the case of fires caused by burning liquid fuels, such as kerosene oil can be controlled by throwing sand or soil over it. Read the below questions and try to answer them. Can you use CO_(2) extinguisher on electrical fires?

You have seen homes, shops and factories caught in fire news, or in newspaper, or in real. Do you think how can the fire be controlled from spreding? Generally, water is used to control fire. Water brings down the temperature of the combustible substance below its ignition temperature. The water vapour surrounds the combustible material, thus helping in cutting off the supply of air. Fire produced by the burning of oil or petrol cannot be controlled by throwing water on it because water being heavier than oil, settles down the oil and oil continues to burn. In the case of fires caused by burning liquid fuels, such as kerosene oil can be controlled by throwing sand or soil over it. Read the below questions and try to answer them. Expalin why fire extinguisher use carbon dioxide?