Chemistry
Fill in the blanks from the choices given in brackets:
(i) The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ………….. (electron affinity, ionisation potential, electronegativity)
(ii) The compound that does not have a lone pair of electrons is ………….. (water, ammonia, carbon tetra chloride)
(iii) When a metallic oxide is dissolved in water, the solution formed has a high concentration of ………….. ions. (H+, H3O+, OH-)
(iv) Potassium sulphite on reacting with hydrochloric acid releases ………….. gas. (Cl2, SO2, H2S)
(v) The compound formed when ethene reacts with Hydrogen is ………….. (CH4, C2H6, C3H8)
Answer
(i) The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called Ionization Potential
(ii) The compound that does not have a lone pair of electrons is carbon tetrachloride.
(iii) When a metallic oxide is dissolved in water, the solution formed has a high concentration of OH- ions.
(iv) Potassium sulphite on reacting with hydrochloric acid releases SO2 gas.
(v) The compound formed when ethene reacts with Hydrogen is C2H6.
Related Questions
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide, is:
- Calcium chloride
- Ferrous chloride
- Ferric chloride
- Copper chloride
Choose the correct answer from the options given – If the molecular formula of an organic compound is C10H18 it is –
(i) Alkene
(ii) Alkane
(iii) Alkyne
(iv) Not a hydrocarbonState which of the following is a common characteristic of a covalent compound.
- High melting point
- Consists of molecules
- Always soluble in water
- Conducts electricity when it is in the molten state.
To increase the pH value of a neutral solution, we should add:
- an acid
- an acid salt
- an alkali
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