If we completely remove the decomposers from an ecosystem,its functioning will be adversely affected because

Which of the following is a linear molecule?

$A$ semiconductor $X$ is made by doping a germanium crystal with arsenic $(Z = 33)$. $A$ second semiconductor $Y$ is made by doping germanium with indium $(Z = 49)$. The two are joined end to end and connected to a battery as shown. Which of the following statements is correct?

$\int [\sin (\log x) + \cos (\log x)] \;dx = $

If the distance $s$ travelled by a particle in time $t$ is given by $s=t^2-2t+5$, then its acceleration is

Arrange the following in order of increasing dipole moment : $H_2O$,$H_2S$,$BF_3$.