Fill in the blanks with the correct word from the brackets:
The molecule of water combines with a _______________ [ hydrogen atom / proton / hydrogen molecule] to form a hydronium ion.

A hydrogen atom is a paramagnetic. A hydrogen molecule is –

Fill in the blanks with the correct words from the brackets : Alkene have ........... (double/single) bonds .

Fill in the blanks with the correct word from the brackets: The covalent molecule containing three single covalent bonds is ____________________ [water / methane / ammonia].

Fill in the blanks with the correct words from the brackets : Alkene active ............ (addition/substituation) reactions.

Fill in the blanks with the correct words from the brackets : Alkene active (i) ......... (analogous/homologus). Series of

With reference to a molecule of water, fill in the blanks with the correct word. [at.no. of H = 1, O = 8] Water is a ___________ [non-polar / polar] covalent molecule in which the atom of ______________ [hydrogen / oxygen] attracts electrons more strongly toward itself. The water molecule shows the presence of ______________ [ double / one single/ two single] covalent bond/s and ______________ [ one / two] lone pair or electrons present in the _______________ [ hydrogen / oxygen] atom.

Fill in the blanks with the correct words from the brackets. Melting and boiling points of covalent compounds are generally ................ (low / high).

Fill in the blanks with the correct words from the brackets. Generally ionic compounds exist in ................(solid/liquid/gas) state.

Fill in the blanks by using the correct word/term given in the brackets. The properties of ______ are due to the hydrogen ions it produces in aqueous solution. (acid/alkali)