List of top Questions asked in AMUEEE- 2009

Two springs $A$ and $B$ are identical but $A$ is harder than $B\left(k_{A} >k_{B}\right)$. Let $W_{A}$ and $W_{B}$ represent the work done when the springs are stretched through the same distance and $W_{A}'$ and $W_{B}'$ are the work done when these are stretched by equal forces, then which of the following is true?

Pure silicon at 300 K has equal electron (n$_e$) and hole (n$_h$) concentration of $1.5 \times 10^{16} m^{-3}$. Doping by indium increases $n_h$ to $4.5 \times 10^{22}m^{-3}$ The $n_e $ in the doped silicon is

A $10\, kg$ stone is suspended with a rope of breaking strength $30 \,kg - wt$. The minimum time in which the stone can be raised through a height $10\, m$ starting from rest is (Taking $g =10 \,N\,kg ^{-1}$ )

Isolation of Bt gene from bacterium (Bacillus thuringiensis) was taken up in the year

International Rice Research Institute (IRRI) is located in

In females the hormone inhibin is secreted by

In chlorophyll structure four pyrrole rings are united with Mg by their atoms of

Environment Protection Act, to protect and improve the quality of our environment (air, water and soil) was passed in the year

One of the chief functions of smooth endoplasmic reticulum is

The microtubules from opposite poles of spindle get attached to the kinetochores of sister chromatids in

Myelin of nerve fibres of central nervous system is produced and maintained by

In the nymphal stage of cockroach the juvenile hormone is secreted by

Sexual reproduction in fungi may lead to formation of

Axoneme having 9 + 2 doublet microtubule arrangement is found in

The famous botanical garden of Kew is located in

In seven pairs of contrasting characters in pea plant studied by Mendel the number of flower based characters was