Which of the following orders is correct for the heat of hydrogenation of these compounds?

The product of the lengths of the perpendiculars from any point on the hyperbola $x^2 - y^2 = 8$ to its asymptotes is:

Which statement is false for the balanced equation given below?
$CS_2 + 3O_2 \to 2SO_2 + CO_2$

Which one of the following is the most widely accepted method of contraception in India,at present?

$A$ telescope has an objective lens of focal length $150 \ cm$ and an eyepiece of focal length $5 \ cm$. If a $50 \ m$ tall tower at a distance of $1 \ km$ is observed through this telescope in normal setting,the angle formed by the image of the tower is $\theta$,then $\theta$ is close to..... (in $^{\circ}$)

Which of the following quantities does not depend upon the orbital radius of the satellite?