The distance between Hyderabad and Delhi is 1674.9 km by rail. How would you express this in centimetres ? Also express this in the scientific form.

b) How can you express in a chemical equation if the precipitation is formed in the reaction ?

How do you feel when you see a rainbow? Express your feelings in the form of a song or poem.

Name four villages in your district. Note the distance between them in km. Express these in centimeters and millimeters.

Name four important towns in your district. Note the distance between them in km. Express these in centimeters and millimeters.

You live in Ahmedabad and you travelled 400 m by bus to reach the nearest station. Then you take a train to reach Gandhi Nagar which is 15 km. away. Then you take a cab to reachyour aunt's house which is 18 km. away i. How much distance did you travel to reach your aunt's house? ii. If you travel for 7 days like this how much distance would you travel?

The chemical behaviour of dihydrogen is determined, to a large extent, by bond dissociation enthalpy. The H-H bond dissociation enthalpy is the highest for a single bond between two atoms of any element. What inferences would you draw from this fact? It is because of this factor that the dissociation of dihydrogen into its atoms is only 0.081% around 2000K which increases to 95.5% at 5000K. Also, it is relatively inert at room temperature due to the high H-H bond enthalpy. Thus the atomic hydrogen is produced at a high temperature in an electric arc or under ultraviolet radiations. Since its orbital is incomplete with Is' electronic configuration, it does combine with almost all the elements. Atomic hydrogen can accomplish reactions by I)losing the only electron to give H^+ II) gaining an electron to form H^- III) sharing electrons to form a single covalent bond The correct statement/s is/ are

A helicopter covers 600km in 1 hour. How much distance will it cover in 4 hours? Express your answer in metres