Explain the following
People often shake branches of a tree for getting down its fruits.

"People often shake branches of a tree in an attempt to cause the fruits to fall." Explain.

Explain the following: Water pipes in colder countries often burst in winter.

Explain the following: The north end of a freely suspended magnetic needle gets attracted towards a piece of soft iron placed a little distance away from the needle.

Explain how the following are adapted to survive in their habitat: Pine tree

The scatterplot above shows the weight, in ounces,of the fruits on a certain truffula tree from days 55 to 85 after flowering. According to the line of best fit in the scatterplot above, which of the following is the closest approximation of the number of days after flowering of a truffula fruit that weighs 5.75 ounces?

Explain the following: HCl is a covalent compound still it conducts electricity in its aqueous state.

Explain the following : Highly branched acids such as are less acidic than unbranched acids.

Classify the following as chemical or physical changes : ** cutting of trees. ** melting of butter in a pan, ** rusting of almirah, ** boiling of water to form steam, ** passing of electric current, through water and the water breaking down into hydrogen and oxygen gases. ** dissolving common salt in water, ** making a fruit salad with raw fruits, and ** burning of paper and wood.

Explain the following : Why concentrated sulphuric acid is always added to water and not the water to concentrated sulphuric acid? Why the mixture gets hot ?