Electron pair which are not shared by atoms are called
Which of the following vitamin is essential for the absorption of calcium from the intestinal tract
Forepoling method is generally adopted for tunnelling in
A & B are two towns. A person covers the distance from A to B on cycle at 17kmph and returns to A by a boat running at a uniform speed of 8kmph. His average speed for the whole journey is
Which of the following transformations does not involve addition
If Ana is x years old then 5 times Ana's age three years ago is
Number of electrons lost by atoms of group IIIA equals
Interaction between highly electron deficient hydrogen and highly electronegative atom is called
Tendency of atoms to acquire eight electrons in their valence shell is
At room temperature most of ionic compounds are
Strength of intermolecular forces from ionic or covalent bond is
Synthetic resins are used on places where
Which of the following relates to FLOWER in the same way as RTERBN relates to SECTOR