Which of the following statement about comet is correct?
$1$. Most comets have elongated elliptical orbits that take them close to the Sun for a part of their orbit and then out into the further reaches of the Solar system for the remainder.
$2$. If a comet is travelling fast enough, it may leave the Solar system.

Which of the following statement is correct?
$1$. In comparison to Jupiter, planet Earth displays eclipse more frequently
$2$. On Mars, only partial solar eclipses are possible

Which of the following statements characterize El-Nino?
$1$. It occurs at irregular intervals.
$2$. It carries warmer water.
$3$. It carries less saline water.
$4$. Its atmospheric equivalent is Southern oscillation.

Which of the following statement given is correct?
$1$. In a cyclone, the direction of wind flow is counter clockwise in the Northern hemisphere.
$2$. The tropical cyclone fades away when it reaches land because there is no large supply of warm moist air.

Which of the following statement about the North Atlantic Drift is correct?
$1$. It keeps the West coast of Northern Europe ice free.
$2$. It is responsible for the warm air mass which interacts with the cold air mass from the Polar region and causes rainfall in Western Europe.
$3$. It meets the Labrador current near Vancouver Island and causes dense fog.

Which of the following statement given is correct?
$1$. The tropical year is shorter than the sidereal year.
$2$. The solar day is longer than the sidereal day.