Questions

Salivary glands of man are  3 pairs = 6. They are one pair of parotid glands, one pair of sub-maxillary or sub-mandibular glands and one pair of sub-lingual glands.

Hydroplaning is caused by a combination of standing water on the road, car speed, and under-inflated or worn-out tires.

Nokia and Airtel along with state-owned network BSNL (Bharat Sanchar Nigam Ltd) have announced that they have partnered to set up 5G internet speed in India to introduce a fast internet ecosystem in the country.

Diamond is the hardest substance available on Earth.

Diamond is the hardest substance available on Earth due to the giant molecular structure of diamond in which each carbon atom is covalently bonded to four other carbon atoms. A covalent bond is very strong and requires a large amount of energy to break itself, and diamond has many covalent bonds.