Questions

The default return value from a function is int. In other words, unless explicitly specified the default return value by compiler would be integer value from function.

There are No bridges over The Amazon River.

The Amazon River, in South America, is the largest river by discharge volume of water in the world and the second longest in length after The Nile in Egypt.

The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar.

When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.

Lala Lajpat Rai, popularly known as Punjab Kesari was an Indian Freedom Fighter who gave the safety valve theory for Indian National Congress in 1916 in a daily news paper paper 'Young India'. 

It was said that the INC was started by Viceroy Lord Dufferin with the help of an ex Civil Services member as a 'Safety Valve' against the popular discontent.

Jinping-I Dam  in China at 305 m (1,001 ft) high