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What is the amplitude of the complex number (- 1 + i sqrt 3 ) /2 is

asked Apr 11, 2019 by pinaki.stu16

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If a = cos alpha + i sin alpha ; b = cos beta + I sin beta ; c = cos gama +

asked Apr 11, 2019 by pinaki.stu16

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Suppose A and B are vectors such that a vector × b vector is equal to 2 IC

asked Apr 11, 2019 by pinaki.stu16

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A bag contain 12 balls out of which x are black 1)if one ball is drawn at

asked Apr 11, 2019 by mk9662864481

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If the height of the transmitting tower is increased by 30 percentage ,t

asked Apr 11, 2019 by hemanthdharmireddikumar

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what type of ecological pyramid would be obtained with the following data

asked Apr 11, 2019 by subharanidebbarma43

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Find the point of extrema of the following function. f(x)=x^4-8x^3+22x^2-24

asked Apr 11, 2019 by ayeshaqadri143

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((-17)+17)/((-25)-42)

asked Apr 11, 2019 by rupathru

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what are carcinogens and mention their types

asked Apr 11, 2019 by chandinikg04

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A streamer takes 10 minute to travel a distance d downstream and 15 minute

asked Apr 11, 2019 by tolgateraj

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What is the general solution of the differential equation 2 X + dY/dx - y =

asked Apr 11, 2019 by pinaki.stu16

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The water is leaking from a spherical balloon of 5 metre radius and the rad

asked Apr 11, 2019 by pinaki.stu16

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What is the length of latus rectum of parabola 13(x-2)^2 +13(y-3)^2 = 2x -

asked Apr 11, 2019 by pinaki.stu16

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If 2x + ay + 4 = 0 is a tangent to a parabola x^2 = y , then what is the va

asked Apr 11, 2019 by pinaki.stu16

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Define order of reaction

asked Apr 11, 2019 by khaveshmeena855

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Which of the following pairs of solutions can be expected to be isotonic at

asked Apr 11, 2019 by mjayasree471

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In rotational motion moment of inertia

asked Apr 11, 2019 by maskejay590

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What happen when we dipped the egg in salt solution

asked Apr 11, 2019 by yashpatidar453

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mendel noted as many pairs of contrasting traits of pea plants

asked Apr 11, 2019 by chelsikhandelwal01

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2,7,24,77,238...... (a)721 (b)722 (c)723 (b)733

asked Apr 11, 2019 by chelsikhandelwal01

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The normal freezing point off nitrobenzene is278.82LA0.25moral solution of

asked Apr 11, 2019 by rajy58484

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Identify the wrong pair/s and correct it. <br> a) Chernobyl incident - Radioactive waste. <br> b) Snow blindness cataract - High dose of CFC. <br> c) Chipko movement - Save trees. <br> d) Polyblend - Solves air pollution. <br>

asked Apr 11, 2019 by priyanka.clay6

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In the above graph what does A and B depict?

asked Apr 11, 2019 by priyanka.clay6

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CFCs are widely used as refrigerants. Then why is it suggested to reduce its emission a far as possible? Explain.

asked Apr 11, 2019 by priyanka.clay6

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A farmer saw water in a pond turned green and with dead fishes. <br> a) What is the reason for the death of fishes? <br> b) Name the phenomenon that leads to the death of fishes.

asked Apr 11, 2019 by priyanka.clay6

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Prove that the set of all three dimensional vectors form an infinite abelia

asked Apr 11, 2019 by karmacharyasoneeya

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Mention the green house gases and their proportion in the pie diagram given below.

asked Apr 11, 2019 by priyanka.clay6

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A person has inhaled air having particulate pollutants of size less than 2.5 micrometers in diameter. What could be the impact of their pollutants on his respiratory system?

asked Apr 11, 2019 by priyanka.clay6

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A man had a B. class Benz which has a very good catalytic converter. On his way the petrol was exhausted and he stopped at a petrol pump. The person at the petrol pump had only leaded petrol. Out of necessity the man had to fill leaded petrol in his car. <br> a) What is its impact on the catalytic activity of the converter ? <br> b) Explain the impact on the environment.

asked Apr 11, 2019 by priyanka.clay6

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It was observed that some of the aquatic birds’ population has been declining. On analysis of the water in their habitat, high concentration of DDT was found. <br> a) What caused the decline is birds’ population? <br> b) What is this phenomenon known as?

asked Apr 11, 2019 by priyanka.clay6

1 answer

Vehicles are fitted with catalytic converters. Give reason.

asked Apr 11, 2019 by priyanka.clay6

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Electrostatic precipitator can remove over 99% particulate matter present in exhaust from a thermal power plant. How?

asked Apr 11, 2019 by priyanka.clay6

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Jhum cultivation has been in practice from earlier days, but its considered more problematic these days. Why?

asked Apr 11, 2019 by priyanka.clay6

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A radiation causes ageing of skin, skin cancer, and inflammation of cornea called snow blindness. It also damages DNA. Name the radiation.

asked Apr 11, 2019 by priyanka.clay6

1 answer

Jhum cultivation has been in practice from earlier days, but its considered more problematic these days. Why?

asked Apr 11, 2019 by priyanka.clay6

1 answer

Why was the Montreal Protocol signed?

asked Apr 11, 2019 by priyanka.clay6

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What is the noise level that can cause permanent impairment of hearing ability of human beings?

asked Apr 11, 2019 by priyanka.clay6

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An azeotropic solution of two liquids has bp lower than either of them when

asked Apr 11, 2019 by maddheshiyashivangi53

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PM2.5 is responsible for causing greatest harm to human health. What is it? How is it harmful?

asked Apr 11, 2019 by priyanka.clay6

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Why should the velocity of air between the plates of an electrostatic precipitator be low?

asked Apr 11, 2019 by priyanka.clay6

1 answer

The central pollution control board observed that a thermal power plant is emitting 80% of its particulate matter in the exhaust due to poor maintenance? What could be the cause for this increase in % of particular matter?

asked Apr 11, 2019 by priyanka.clay6

1 answer

Why is a scrubber used? Which spray is used on exhaust gases passing through a scrubber?

asked Apr 11, 2019 by priyanka.clay6

1 answer

Motor vehicles with catalytic converter should use unleaded petrol. Why?

asked Apr 11, 2019 by priyanka.clay6

1 answer

The birds egg shells become thinner in an area where there is an excess application of pesticides. Comment.

asked Apr 11, 2019 by priyanka.clay6

1 answer

Mention the information that the health workers derive by measuring BOD of a water body.

asked Apr 11, 2019 by priyanka.clay6

1 answer

Why should the velocity of air between the plates of an electrostatic precipitator be low?

asked Apr 11, 2019 by priyanka.clay6

1 answer

The coefficient of x^-9 in expansion of (x^2/2-2/x)^9 is

asked Apr 11, 2019 by sathwikaamandaa

1 answer

An ionic solid MX having bCC structure has the ede lenght 4,3 pm the shorte

asked Apr 11, 2019 by maddheshiyashivangi53

1 answer

For the reaction H2 (g) +I2 (g)=2HI(g) Kp changes with

asked Apr 11, 2019 by maddheshiyashivangi53

1 answer

The orbital radius of the electron in the hydrogen atom changes from r to 4

asked Apr 11, 2019 by ddsudhakar2001

1 answer

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