List of practice Questions

A body is moving forward and backward. Change in frequency observed by the body of a source is $2 \%$. What is velocity of the body? (Speed of sound is $300\, ms ^{1}$ )

Rate of heart beat is reduced by

Ridges present in the ventricles are

Cell fragments of megakaryocytes yield

In angiosperms, floral bud is covered by whorl of

Short twisted strands of hyphae which serves as anchors for lichens are

During lytic life cycle of a virulent DNA phage which of the following does not occur ?

A virus containing ssRNA acting as a templatefor DNA synthesis is called as

Helically coiled bacteria are called

Paramoecium is a

A person affected by disease having chromosome complement XXX is called

On the basis of rRNA genes bacteria are divided into

Bacteria protect themselves from viruses by fragmenting viral DNA upon entry with

Guard cells control

Which of the following is not present in a nucleotide?

The IUPAC name of $ [Ni(NH_3 )_4][NiCl_4]$ is

The edges of a parallelopiped are of unit length and are parallel to non-coplanar unit vector $\widehat{a},\widehat{b},\widehat{c}$ such that $\widehat{a}.\widehat{b}=\widehat{b}.\widehat{c}=\widehat{c}.\widehat{a}=\frac{1}{2}.$Then, the volume of the parallelopiped is

Let $S_n= \displaystyle \sum_{k=0}^n \frac{n}{n^2+kn+k^2} \, and \, T_n= \displaystyle \sum_{k=0}^{n-1} \frac{1}{n^2+kn+k^2} , \, for \, $ $n = 1 ,2 ,3 $,... Then,

Yellowish edges appear in leaves deficient in

Most of the biological energy is supplied r mitochondria through

Photolysis of water by isolated chloroplasts was demonstrated by

Astral rays are formed of

Progesterone level falls during

Endangered plants spedes are conserved through

If $0 < x < 1$, then $\sqrt{1+x^2}[\{x cos(cot^{-1}x)$ $+sin(cot^{-1}x)\}^2-1]^{1/2}$ is equal to