Recent questions tagged 179

Select the correct group of biocontrol agents.

asked Jul 8, 2019 by pady_1

1 answer

$\begin{align} \int \frac{x^5}{x^2 + 1} \;dx \end{align}$ is equal to :

asked Dec 19, 2018 by pady_1

0 answers

If $y = \cot^{-1} \begin{bmatrix} \tan ( \frac{\pi}{2} - x ) \end{bmatrix}$, then $\frac{dy}{dx}$ is equal to :

asked Dec 19, 2018 by pady_1

0 answers

The length of normal to the curve $y = \frac{1}{2} a(e^{x/a} + e^{-x/a})$ is :

asked Dec 19, 2018 by pady_1

0 answers

Each of the roots of the equation $x^3 - 6x^2 + 6x-5 =0$ are increased by $h$. So that the new transformed equation does not contain $x^2$ term, then $h$ is equal to :

asked Dec 11, 2018 by pady_1

0 answers

Evaluate $\begin{align} \int_0^{\pi/2} \frac{\sqrt{\sin x}}{\sqrt{\sin x} + \sqrt{\cos x} } dx \end{align}$

asked Dec 11, 2018 by pady_1

0 answers

$\displaystyle\lim_{x \to \frac{\pi}{2}} \frac{[1- \tan(\frac{x}{2})][1 - \sin x]}{[1+\tan(\frac{x}{2})][\pi - 2x]^3}$ is :

asked Dec 11, 2018 by pady_1

0 answers

A particle of mass $m$ is attached to a spring (of spring constant $k$) and has a natural angular frequency $\omega_0$. An external force $F(t)$ proportional to $\cos \omega t ( \omega \neq \omega_0)$ is applied to the oscillator. The time displacement of the oscillator will be proportional to

asked Nov 5, 2018 by pady_1

0 answers

Which of the following organisms are known as chief producers in the oceans ?

asked Aug 21, 2018 by pady_1

2 answers

The diagrams below show regions of equipotentials. <br> <br> A positive charge is moved from A to B in each diagram.

asked Aug 21, 2018 by pady_1

1 answer

A particle of mass 10 g moves along a circle of radius 6.4 cm with a constant tangential acceleration. What is the magnitude of this acceleration if the kinetic energy of the particle becomes equal to $8 \times 10^{–4} J$ by the end of the second revolution after the beginning of the motion ?

asked Aug 21, 2018 by pady_1

1 answer

A photoelectric surface is illuminated successively by monochromatic light of wavelength $\lambda$ and $\frac{\lambda}{2}$ . If the maximum kinetic energy of the emitted photoelectrons in the seconds case is 3 times that in the first case, the work function of the surface of the material is : <br> (h = Planck’s constant, c = speed of light)

asked Aug 21, 2018 by pady_1

1 answer

A scrubber in the exhaust of a chemical industrial plant removes:

asked Aug 20, 2018 by pady_1

1 answer

Global warming can be controlled by :

asked Aug 20, 2018 by pady_1

2 answers

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-hormonal control system ?

asked Aug 20, 2018 by pady_1

1 answer

The figure given below shows a small part of human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function, <br>

asked Aug 16, 2018 by pady_1

1 answer

$C_4$ plants are more efficient in photosynthesis than $C_3$ plants due to –

asked Jul 26, 2018 by pady_1

1 answer

Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by :

asked Jul 26, 2018 by pady_1

2 answers

To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes, belong?

asked Jul 26, 2018 by pady_1

2 answers

Inheritance of skin colour in humans is an example of:-

asked Jul 26, 2018 by pady_1

1 answer

Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters, is -

asked Jul 25, 2018 by pady_1

0 answers

Haemophilia is more commonly seen in human males than in human females because -

asked Jul 24, 2018 by pady_1

1 answer

Which one of the following pairs is not correctly matched ?

asked Jul 24, 2018 by pady_1

2 answers

Which one pair of examples will correctly represent the grouping Spermatophyta according to one of the schemes of classifying plants : -

asked Jul 24, 2018 by pady_1

1 answer

Four radial V.B. are found in : -

asked Jul 23, 2018 by pady_1

0 answers

Adhesive pad of fungi penetrate the host with the help of : -

asked Jul 20, 2018 by pady_1

1 answer

Mangolian idiots are due to trisomy in 21st chromosome is called :

asked Jul 20, 2018 by pady_1

1 answer

Embryo of sunflower have :

asked Jun 15, 2018 by pady_1

1 answer

Raj bought two rolls of tape. The first roll had 11.8 metres of tape and the second roll had 19.5 metres of tape. How many metres of tape did Raj buy in all?

asked Sep 26, 2016 by balaji.thirumalai

1 answer

Warren bought two rolls of tape. The first roll had 7.2 metres of tape and the second roll had 7.45 metres of tape. How many metres of tape did Warren buy in all?

asked Dec 31, 2015 by pady_1

1 answer

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