Recent questions tagged 158

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to :

asked Jul 8, 2019 by pady_1

2 answers

If $z = \sin^{-1} \{ \frac{x+y}{\sqrt{x} + \sqrt{y} } \}$, then $x \frac{\partial z}{\partial x} + y \frac{\partial z}{\partial y}$ is equal to :

asked Dec 19, 2018 by pady_1

0 answers

$f : R \to R$, defined by $f(x)=\sin x$ and $g : R \to R$, defined by $g(x) = x^2, \; (fog) (x)$ is equal to :

asked Dec 19, 2018 by pady_1

0 answers

The number of quadratic expressions with the coefficient drawn from the set $\{0, 1, 2, 3\}$ is :

asked Dec 19, 2018 by pady_1

0 answers

The solution of $x^2 +y^2 \frac{dy}{dx}=4$ is :

asked Dec 11, 2018 by pady_1

0 answers

A triangle with vertices (4, 0), (-1, -1), (3, 5) is :

asked Dec 11, 2018 by pady_1

0 answers

The number of the real solutions of the equation $x^2 - 3|x| + 2 =0$ is :

asked Dec 11, 2018 by pady_1

0 answers

A machine gun fires bullet of mass $40\;g$ with a velocity $1200\;ms^{-1}$. The man holding it can exert a maximum force of $144\;N$ on the gun. How many bullets can he fire per second at the most ?

asked Nov 5, 2018 by pady_1

0 answers

The amnion of mammalian embryo is derived from

asked Aug 21, 2018 by pady_1

2 answers

A beam of light from a source L is incident normally in a plane mirror fixed at a certain distance x from the source. The beam is reflected back as a spot on a scale placed just above the source L. When the mirror is rotated through a small angle $\theta$, the spot of the light is found to move through a distance y on the scale. The angle $\theta$ is given by-

asked Aug 21, 2018 by pady_1

1 answer

The molecules of a given mass of a gas have r.m.s velocity of $200 \; ms^{-1}$ at $27^oC$ and $1.0 \times 10^5 \; Nm^{-2}$ pressure. When the temperature and pressure of the gas are respectively, $127^oC$ and $ 0.05 \times 10^5 \; Nm^{-2}$, the r.m.s. velocity of its molecules in $ms^{-1}$ is :

asked Aug 21, 2018 by pady_1

1 answer

A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :

asked Aug 21, 2018 by pady_1

1 answer

Fight- or- flight reaction cause activation of:

asked Aug 20, 2018 by pady_1

1 answer

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function / deficiency symptom

asked Aug 20, 2018 by pady_1

1 answer

Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component 'X' in it

asked Aug 20, 2018 by pady_1

1 answer

Select the correct option with respect to mitosis.

asked Aug 16, 2018 by pady_1

1 answer

Which stages of cell division do the following figures A and B represent respectively ?

asked Jul 26, 2018 by pady_1

1 answer

Elbow joint is an example of :

asked Jul 26, 2018 by pady_1

1 answer

A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this? (i) Lots of urea and phosphate fertilizer were used in the crops in the vicinity (ii) the area was sprayed with DDT by an aircraft (iii) The lake water turned green and stinky (iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis Which two of the above were the main causes of fish mortality in the lake?

asked Jul 26, 2018 by pady_1

1 answer

A person who is on a long hunger strike and is surviving only on water, will have:-

asked Jul 26, 2018 by pady_1

2 answers

Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread ? A. Temperature of about 25ºC B. Temperature of about 5ºC C. Relative humidity of about5% D. Relative humidity of about 95% E. A shady place F. A brightly illuminated place Choose the answer from the following options

asked Jul 25, 2018 by pady_1

1 answer

According to widely accepted "fluid mosaic model" cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements are incorrect -

asked Jul 24, 2018 by pady_1

1 answer

Diversification in plant life appeared :-

asked Jul 24, 2018 by pady_1

0 answers

The major role of minor elements inside living organisms is to act as : -

asked Jul 24, 2018 by pady_1

1 answer

Which of the following is a correct pair : -

asked Jul 23, 2018 by pady_1

1 answer

Half life period of $C^{14}$ is : -

asked Jul 20, 2018 by pady_1

1 answer

Plasmid has been used as vector because :

asked Jul 20, 2018 by pady_1

1 answer

A normal leaf cell have how many genomes :

asked Jun 15, 2018 by pady_1

1 answer

On Monday, Lisa walked 7.1 kilometres. On Tuesday, she walked 1.8 kilometres less than she had walked on Monday. How far did Lisa walk on Tuesday?

asked Dec 31, 2015 by pady_1

1 answer

Ask Questions, Get Answers

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to :

If $z = \sin^{-1} \{ \frac{x+y}{\sqrt{x} + \sqrt{y} } \}$, then $x \frac{\partial z}{\partial x} + y \frac{\partial z}{\partial y}$ is equal to :

$f : R \to R$, defined by $f(x)=\sin x$ and $g : R \to R$, defined by $g(x) = x^2, \; (fog) (x)$ is equal to :

The number of quadratic expressions with the coefficient drawn from the set $\{0, 1, 2, 3\}$ is :

The solution of $x^2 +y^2 \frac{dy}{dx}=4$ is :

A triangle with vertices (4, 0), (-1, -1), (3, 5) is :

The number of the real solutions of the equation $x^2 - 3|x| + 2 =0$ is :

A machine gun fires bullet of mass $40\;g$ with a velocity $1200\;ms^{-1}$. The man holding it can exert a maximum force of $144\;N$ on the gun. How many bullets can he fire per second at the most ?

The amnion of mammalian embryo is derived from

The molecules of a given mass of a gas have r.m.s velocity of $200 \; ms^{-1}$ at $27^oC$ and $1.0 \times 10^5 \; Nm^{-2}$ pressure. When the temperature and pressure of the gas are respectively, $127^oC$ and $ 0.05 \times 10^5 \; Nm^{-2}$, the r.m.s. velocity of its molecules in $ms^{-1}$ is :

A nucleus of uranium decays at rest into nuclei of thorium and helium. Then :

Fight- or- flight reaction cause activation of:

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function / deficiency symptom <br>

Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component 'X' in it <br>

Select the correct option with respect to mitosis.

Which stages of cell division do the following figures A and B represent respectively ? <br>

Elbow joint is an example of :

A person who is on a long hunger strike and is surviving only on water, will have:-

According to widely accepted "fluid mosaic model" cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements are incorrect -

Diversification in plant life appeared :-

The major role of minor elements inside living organisms is to act as : -

Which of the following is a correct pair : -

Half life period of $C^{14}$ is : -

Plasmid has been used as vector because :

A normal leaf cell have how many genomes :

On Monday, Lisa walked 7.1 kilometres. On Tuesday, she walked 1.8 kilometres less than she had walked on Monday. How far did Lisa walk on Tuesday?