Explain why fusion inside stars can take place between nuclei having mass number smaller than that of iron?

Why do stable nuclei have more neutrons than protons?

Explain why one can jump higher on the surface of the Moon than that on the Earth.

What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.

Explain why cation are smaller and anions larger in radii than their parent atoms?

Why do stable nuclei never have more protons than neutrons?

Which of the following are empty sets? why : A = {a|a is a natural number smaller than zero}

Explain why sexual reproduction in angiosperms is said to take place through double fertilization and triple fusion. Also draw a labelled diagram of embryo sac to explain the phenomena.

_____ interaction takes place between a polar molecule having permanent dipole moment and nonpolar molecule with zero dipole moment.

Spheres of iron and lead having same mass are completely immersed in water. Density of lead is more than that of iron. Apparent loss of weight is W_1 for iron sphere and W_2 for lead sphere. Then W_1/W_2 is

Read the following paragraph and answer the questions: If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing gue to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses haet energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistance box (meaning that the energy exchange takes place between the two objects only ), then no energy can flow from inside the box or come into the box. Heat transferred from where to where?