Recent questions tagged 153

In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?

asked Jul 8, 2019 by pady_1

1 answer

If $a+b+c=0$, then one root of $\begin{vmatrix} a-x & c & b \\ c & b-x& a \\ b & a & c-x \end{vmatrix}=0$ is :

asked Dec 19, 2018 by pady_1

0 answers

If $^nP_7 = 42 \;^nP_5$, then $n$ is equal to :

asked Dec 19, 2018 by pady_1

0 answers

If $f : R \to R$ is defined by $g : R \to R$ are defined by $f(x) = 2x + 3$ and $g(x) = x^2 + 7$, then the values of $x$ for which $f(g(x)) = 25$, are :

asked Dec 19, 2018 by pady_1

0 answers

$\begin{align} \int_0^{\pi/2} \sin^8x \cos^2 x \;dx \end{align}$ is equal to :

asked Dec 11, 2018 by pady_1

0 answers

If 1, $\log_3 \sqrt{(3^{1-x} +2)}, \; \log_3 (4.3^x -1)$ are in AP, then $x$ equals :

asked Dec 11, 2018 by pady_1

0 answers

If $z$ and $\omega$ are two non-zero complex numbers such that $|z \; \omega| = 1$, and $arg (z) - arg(\omega) = \frac{\pi}{2}$, then $\overline{z} \omega$ is equal to :

asked Dec 11, 2018 by pady_1

0 answers

A ball is released from the top of a tower of height $h$ metres. It takes $T$ seconds to reach the ground. What is the position of the ball in $T/3$ seconds ?

asked Nov 5, 2018 by pady_1

0 answers

Match the items given in Column I with thos in Column II and select the correct option given below : <br>

asked Aug 21, 2018 by pady_1

1 answer

A carnot engine having an efficiency of $\frac{1}{10}$ as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is :

asked Aug 21, 2018 by pady_1

1 answer

From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre ?

asked Aug 21, 2018 by pady_1

1 answer

A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. The lowest resonant frequency for this string is :

asked Aug 21, 2018 by pady_1

1 answer

Select the correct matching of the type of the joint with the example in human skeletal system : <br>

asked Aug 20, 2018 by pady_1

1 answer

Select the correct statement with respect to locomotion in humans

asked Aug 20, 2018 by pady_1

1 answer

In which one of the following the genus name its two characters and its phylum are not correctly matched, whereas the remaining three are correct <br>

asked Aug 20, 2018 by pady_1

0 answers

In which one of the following the genus name, its two characters and its class/phylum are correctly matched ? <br>

asked Aug 16, 2018 by pady_1

1 answer

One of the free-living anaerobic nitrogen-fixer is

asked Jul 26, 2018 by pady_1

2 answers

Seminal plasma in humans is rich in :

asked Jul 26, 2018 by pady_1

1 answer

Which one of the following phyla is correctly matched with its two general characteristic?

asked Jul 26, 2018 by pady_1

1 answer

In the human female, menstruation can be deferred by the administration of :

asked Jul 26, 2018 by pady_1

1 answer

Which of the following pairs of an animal and a plant represents endangered organisms in India-

asked Jul 25, 2018 by pady_1

2 answers

Which one of the following represents an ovule, where the embryo sac becomes horse- shoe shaped and the funiculus and micropyle are close to each other -

asked Jul 24, 2018 by pady_1

2 answers

Which one of the following is the correct matching of a vitamin, its nature and its deficiency disease :

asked Jul 24, 2018 by pady_1

1 answer

In Drosophila, the *** is determined by :

asked Jul 24, 2018 by pady_1

1 answer

Which type of association is found in between entomophilous flower and pollinating agent : -

asked Jul 23, 2018 by pady_1

2 answers

Proteinaceous pigment which control the activities concerned with light : -

asked Jul 20, 2018 by pady_1

1 answer

Which evidence of evolution related to Darwin's finches :

asked Jul 20, 2018 by pady_1

2 answers

Oral contraceptives contain :

asked Jun 15, 2018 by pady_1

1 answer

A snail can move a distance of 1.176 meters in 2.4 hours. What distance can it travel in ten hours?

asked Dec 31, 2015 by pady_1

0 answers

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