Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
2. Neutron (n)
Match the following and identify the correct option
|(a) CO(g)+H2(g)||(i) Mg(HCO3)2+Ca(HCO3)2|
|(b) Temporary hardness of water||(ii) An electron deficient hydride|
|(c) B2H6||(iii) Synthesis gas|
|(d) H2O2||(iv) Non-planar structure|
The method used to remove the temporary hardness of water is-
1. Synthetic resins method
2. Calgon's method
3. Clark's method
4. Ion-exchange method
An incorrect statement among the following regarding hydrogen is -
1. Hydrogen never acts as cation in ionic salts
2. Hydronium ion, H3O+ exists freely in a solution
3. Dihydrogen does not act as a reducing agent
4. Hydrogen has three isotopes of which protium is the most common
The reaction of aqueous KMnO4 with H2O2 in acidic condition gives:
The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order
Some statements about water are given below:
(a) Heavy water is used as a moderator in nuclear reactors.
(b) Heavy water is more associated than ordinary water.
(c) Heavy water is a more effective solvent than ordinary water.
Which of the above statements are correct?
1. (a), (b) and (c)
2. (b) and (c)
3. (a) and (c)
4. (a) and (b)
Pure water can be obtained from sea water by :
3. Reverse osmosis
on oxidation gives :
The pair that on reaction will not evolve gas is :
1. Copper and HCl (aqueous)
2. Iron and steam
3. Iron and (aqueous)
4. Sodium and ethyl alcohol