Recent questions tagged 120

Which of the following immune responses is responsible for rejection of kidney graft?

asked Jul 8, 2019 by pady_1

1 answer

A square, non-singular matrix A satisfies $A^2 - A + 2I=0$, then $A^{-1}$ is equal to :

asked Dec 19, 2018 by pady_1

0 answers

The equation of lines passing through the intersection of lines $x - 2y + 5=0$ and $3x+2y+7=0$ and perpendicular to $x-y=0$ is :

asked Dec 19, 2018 by pady_1

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$\frac{d}{dx} \{ \cos^{-1} (\frac{4x^3}{27} - x ) \}$ is equal to :

asked Dec 19, 2018 by pady_1

0 answers

If the extremities of diagonal of a square $(1, -2, 3), \; (2, -3, 5)$ then the length of its side, is:

asked Dec 11, 2018 by pady_1

0 answers

Number of atoms in the unit cell of $Na$ (BCC type crystal) and $Mg$ (FCC type crystal) are respectively :

asked Dec 11, 2018 by pady_1

0 answers

A red solid is insoluble in water. However it becomes soluble if some $KI$ is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of metal appear on the cooler parts of the test tube. The red solid is :

asked Dec 11, 2018 by pady_1

0 answers

In conversion of limestone to lime, <br> $CaCO_3 (s) \to CaO(s) + CO_2(g)$ <br> the values of $\Delta H^{\circ}$ and $\Delta S^{\circ}$ are $+179.1\;kJ\; mol^{-1}$ and $160.2\;J/K$ respectively at 298 K and 1 bar. Assuming that $\Delta H^{\circ}$ and $\Delta S^{\circ}$ do not change with temperature, temperature above which conversion of limestone to lime will be spontaneous is :

asked Nov 29, 2018 by pady_1

0 answers

Suppose a population a has 100 observations 101, 102, ..., 200 and another population $B$ has 100 observations 151, 152, ...., 250. If $V_A$ and $V_B$ represent the variances of the two population respectively, then $\frac{V_A}{V_B}$ is :

asked Nov 13, 2018 by pady_1

0 answers

Of the following sets which one does not contain isoelectronic species ?

asked Nov 5, 2018 by pady_1

0 answers

The $E^{\circ}_{M^{+3}/M^{2+}}$ values for $Cr, \; Mn, \; Fe$ and $Co$ are $-0.41, \; +1.57, \; + 0.77$ and $+1.97 /;\;V$ respectively. For which one of these metals the change in oxidation state form $+2$ and $+3$ is easiest ?

asked Nov 5, 2018 by pady_1

1 answer

After karyogamy followed by meiosis, spores are produced exogenously in

asked Aug 21, 2018 by pady_1

1 answer

Which cells of ‘Crypts of Lieberkuhn’ secrete antibacterial lysozyme ?

asked Aug 21, 2018 by pady_1

1 answer

In bryophytes and pteridophytes, transport of male gametes requires :

asked Aug 21, 2018 by pady_1

1 answer

Which one of the following is not applicable to RNA?

asked Aug 21, 2018 by pady_1

1 answer

Which of the following showns coiled RNA strand and capsomeres?

asked Aug 20, 2018 by pady_1

1 answer

Which of the following statements is not true of two genes that show 50% recombination frequency ?

asked Aug 20, 2018 by pady_1

1 answer

Companion cells are closely associated with

asked Aug 20, 2018 by pady_1

1 answer

In land plants, the guard cells differ from other epidermal cells in having :

asked Aug 16, 2018 by pady_1

1 answer

Keel is characteristic of the flowers of:

asked Jul 26, 2018 by pady_1

1 answer

Removal of introns and joining the exons in a defined order in a transcription unit is called :

asked Jul 26, 2018 by pady_1

1 answer

Darwin's Finches are an excellent examples of:

asked Jul 26, 2018 by pady_1

2 answers

Ergot of rye is caused by a species of :

asked Jul 26, 2018 by pady_1

1 answer

Which one of the following is the most suitable medium for culture of Drosophila melanogaster ?

asked Jul 25, 2018 by pady_1

0 answers

Which one of the following makes use of RNA as a template to synthesize DNA -

asked Jul 24, 2018 by pady_1

2 answers

During transcription, if the nucleotide sequence of the DNA strand that is being coded is ATACG, then the nucleotide sequence in the mRNA would be -

asked Jul 24, 2018 by pady_1

1 answer

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency : -

asked Jul 24, 2018 by pady_1

1 answer

The semilog of per minute growing bacteria is ploted against time. What will the shape of graph

asked Jul 23, 2018 by pady_1

1 answer

In which of the following animal post **** tail is found

asked Jul 20, 2018 by pady_1

1 answer

Endosperm is formed during the double fertilization by :

asked Jul 20, 2018 by pady_1

1 answer

A cup have $10^5$ bacterial cells. Each bacterial cell divides in 35 minutes. What shall be the number of bacteria after 175 min.

asked Jun 15, 2018 by pady_1

2 answers

The rain fall in a city during the months of July, August and September were 9.82 cm, 5.24 cm and 2.32 cm respectively. Find the total rainfall during three months.

asked Dec 31, 2015 by pady_1

0 answers

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