Q. White solid oxides are produced by burning of group II metals in the presence of

View solution

Q. If water reacts with calcium oxide, it will produce

View solution

Q. The attraction of higher nuclear charge is less than actual charge because of

View solution

Q. In flares production, mostly the fine powder used is of

View solution

Q. Hot magnesium reacts with water to yield

View solution

Q. Decoy magnesium flares give off heat confuses the infrared detection system in missiles so the enemy can not

View solution

Q. When magnesium is burnt on Bunsen burner it gives flame of color

View solution

Q. The calcium oxide reacts with water readily to make a solution which is weakly

View solution

Q. Going down the group the Group-II elements are more

View solution

Q. Strontium (Sr) compounds put on a nichrome (NiCr) wire and heated gives of color

View solution

Q. What is true about metals?

View solution

Q. The percentage of a sample of HBr decomposes at 430 °C. is

View solution

Q. Down the group, the hydrogen halides could be

View solution

Q. Halogens dissolve well in

View solution

Q. Oxidation of hydrogen halides become easier going

View solution

Q. Halogens react with hydrogen gas to form

View solution

Q. The halogens get less reactive

View solution

Q. Poisonous gases are formed with reactions of halogens and sulfuric acid that's why it should be handled

View solution

Q. The halogens reacts with non-metals forming

View solution

Q. HCl is mostly visible in the form of

View solution