Find the value of $-197^{\circ} C$ temperature in Kelvin. (in $~K$)

Changes in $GnRH$ pulse frequency in females is controlled by circulating levels of

Which of the following inhibits leaf abscission?

Which one is an incorrect statement?

If $3x^2-11xy+10y^2-7x+13y+k=0$ denotes a pair of straight lines,then the point of intersection of the lines is

$A$ magnet freely suspended in a vibration magnetometer makes $40$ oscillations per minute at place $A$ and $20$ oscillations per minute at a place $B$. If the horizontal component of earth's magnetic field at $A$ is $36 \times 10^{-6} ~T$,then its value at $B$ is