Science
(a) Write the molecular formula of the following carbon compounds :
- Methane
- Propane
(b) Carbon compounds have low melting and boiling points. Why ?
Related Questions
The electrons in the atoms of two elements X and Y are distributed in three shells having 1 and 7 electrons respectively in their outermost shells.
(a) Write the group numbers of these elements in the Modern Periodic Table.
(b) Write the molecular formula of the compound formed when X and Y combine with each other.
(c) Which of the two is electropositive ?
(a) Which of the following flowers will have higher possibility of self-pollination ?
Mustard, Papaya, Watermelon, Hibiscus
(b) List the two reproductive parts of a bisexual flower.
Which one of the two multicellular organisms Spirogyra and Planaria reproduces by regeneration and why? Give an example of any other organism which can also reproduce by the same process.
What is variation ? List two main reasons that may lead to variation in a population.