Question
In methane (CH₄), what are the valence electrons of
carbon and hydrogen respectively?Solution
Methane (CH₄) is a simple carbon compound commonly used as fuel and a major component of biogas and CNG. In this molecule, carbon has 4 valence electrons (making it tetravalent), while hydrogen has 1 valence electron. This electronic structure allows carbon to form four bonds with hydrogen atoms in methane.
The speed of a boat in still water is 32km/hr and the speed of the current is 8km/hr. It takes a total of 15hours to row to upstream from Point A to B a...
The speed of a boat in still water is 20 km/hr. If the boat covers 90 km in upstream in 9 hours, then find the time taken by the boat to travel 150 km i...
A man rows 240 km upstream in 5 hours and 360 km downstream in 5 hours. Find the time required to row 300 km in still water.
Speed of current is equal to 25% of speed of boat in still water. If the boat takes 5 hours to cover 120 km in still water, then find the time taken by ...
A takes 3 hours more while swimming upstream than downstream. His speed in still water is 12 km/hr. The speed of stream is 4 km/hr. What is the distance?
The speed of a boat in still water is 20 km/hr. If the boat covers 80 km in upstream in 8 hours, then find the time taken by the boat to travel 150 km i...
The downstream speed of a boat is 75% greater than its upstream speed, and the speed of the stream is 3 m/s. How far can the boat travel in still water ...
A boat takes 2 hours 20 minutes to cover 140 km downstream and 2.5 hours to cover 75 km upstream. If the boat covers 'y' km upstream and '2y' km downstr...
The speed of a boat in still water is 25 km/hr. If the boat covers 240 km in upstream in 12 hours, then find the time taken by the boat to travel 177 km...
If the sum of upstream and downstream speed is 20 km/hr and the speed of the current is 5 km/hr. Then find time taken to cover 45 km in downward?
Relevant for Exams:
