_______contributes towards global warming so it is called a greenhouse gas.
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Find the similarity in the following :
Carbon, Silicon, Boron, Arsenic
Which of the following statements are CORRECT?
I. Ethanol is a good solvent for organic compounds.
II. Boiling and melting points of ethanol are low with respect to water.
III. Ethanol is used tincture iodine
Which one of the following is not a mixture
Which of the following substances cause temporary hardness in water?
1. Mg(HCO3)2
2. Ca(HCO3)2
3. CaCl2
4. MgSO4
There are two types of water hardness: temporary and permanent hardness. Temporary hardness is due to the presence of calcium hydrogen carbonate Ca(HCO3)2(aq) and magnesium hydrogen carbonate Mg(HCO3)2(aq).
Which one of the following statements would be INCORRECT to use?
Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?
The vast amount of sea weeds present in oceans may produce an endless source of
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