Recent questions tagged sat

In the triangle below , find the remaining sides

asked Jun 28, 2018 by meena.p

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If $f(x)=3 \sin x+4 \cos x$ what is $f(\large\frac{\pi}{4})$

asked Jun 28, 2018 by meena.p

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The process in which oxidation number increases is known as

asked Jun 28, 2018 by meena.p

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The most active nonmetallic element is

asked Jun 28, 2018 by meena.p

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In the reaction between ozone and hydrogen peroxide, $H_2O_2$ acts as

asked Jun 28, 2018 by meena.p

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A metal ion $M^{3+}$ after loss of three electrons in a reaction will have an oxidation number equal to

asked Jun 28, 2018 by meena.p

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$C_2H_6(g)+nO_2 \to CO_2(g)+H_2O(l)$ In this equation, the ratio of the coefficients of $CO_2$ and $H_2O$ is

asked Jun 28, 2018 by meena.p

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The value of x in the partial redox equation $MnO^{−4}+8H^{+} + xe ⇌ Mn^{2+}+4H2O$ is

asked Jun 28, 2018 by meena.p

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The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is

asked Jun 27, 2018 by meena.p

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Excess of KI reacts with $CuSo_4$ solution and then $Na_2S_2O_3$ solution is added to it. Which of the statements is incorrect for this reaction ?

asked Jun 27, 2018 by meena.p

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One mole of $N_2H_4$ loses 10 mole electrons to form a new compound Y. Assuming that all the N2 appears in new compound, what is the oxidation state of Nitrogen in Y? (There is no change in the oxidation state of H)

asked Jun 27, 2018 by meena.p

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Find the oxidation number of $S$ in $HSO^{3-}$ ion

asked Jun 27, 2018 by meena.p

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What can be the coordinates of a points on a unit circle at an angle of $\large\frac{5 \pi}{6}$

asked Jun 27, 2018 by meena.p

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A tree casts a shadow $24\; m$ long and cosin of the angle of elevation from the tip of the shadow to the top of the tree is $\dfrac{4}{5}$, what is the height of the tree ?

asked Jun 27, 2018 by meena.p

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If $x \tan 45^{\circ} \cos 60^{\circ} = \sin 60^{\circ} \cot 60^{\circ}$, then $x$ =_______

asked Jun 27, 2018 by meena.p

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If $\cos \theta = \large\frac{3}{4}$ then the value of $9 \tan ^2 \theta +9 $ is ______

asked Jun 27, 2018 by meena.p

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If $2 \mathrm{cosec}^2 30^{\circ} + x \sin^2 60^{\circ}- \large\frac{3}{4} $$\tan^2 30 =10$ then the value of $x$ is ________

asked Jun 27, 2018 by meena.p

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A kite is flying attached to a thread which is $165\;m$ long. The thread makes an angle of $30^{\circ}$ with the ground. The height of the kite from the ground is ________

asked Jun 27, 2018 by meena.p

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From the top of a $50\;m$ high building, the angle of depression of a car on the road is $30^{\circ}$. The distance between the car and the building is ________

asked Jun 27, 2018 by meena.p

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The height of a tower is $10 \;m$. Find the length of its shadow when sun's attitude makes an angle of $45^{\circ}$ to the horizontal

asked Jun 27, 2018 by meena.p

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If $ \tan \theta = \large\frac{20}{21}$ then $ \large\frac{\cos \theta - \sin \theta}{\cos \theta +\sin \theta}$ is

asked Jun 27, 2018 by meena.p

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A ladder whose length is 10 m lies on a wall at a height of 5 m. What could be the angle of inclination in radian measure ?

asked Jun 27, 2018 by meena.p

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In the triangle PQR, the hypotenuse is $1000$ and $\cos \;60^{\circ}= \large\frac{1}{2}$.<br> What is the length of the side PQ ?<br>

asked Jun 26, 2018 by meena.p

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The hypotenuse of a triangle as shown in the figure is 25 units . What is its area ?

asked Jun 26, 2018 by meena.p

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If $\sin x =\large\frac{1}{\sqrt 3}$, then which of the following must be true ?

asked Jun 26, 2018 by meena.p

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Find the value of $\cos 30^{\circ}+\sin 30^{\circ}$

asked Jun 26, 2018 by meena.p

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A tree breaks down in a storm and stands in the front as shown in the figure. What is the height of the tree if its tip is 10 m from the bottom?

asked Jun 26, 2018 by meena.p

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Which of the following angel is coterminal with $750^{\circ}$ ?

asked Jun 26, 2018 by meena.p

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If $\cot x = \large\frac{24}{7}$, then what is $\cos x$

asked Jun 26, 2018 by meena.p

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A particle travels along a unit circle and stops at $\large\frac{7 \pi}{6}$ radius. What will be the coordinate at that point ?

asked Jun 26, 2018 by meena.p

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Which of the following has the same trigonometric values as $450^{\circ}$ ?

asked Jun 26, 2018 by meena.p

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Which of the following represents $\large\frac{2\pi}{3}$ radius given in degrees ?

asked Jun 26, 2018 by meena.p

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What is the pressure of HCl gas at $-40^{\large\circ}C$ if its density is $8.0 kgm^{-3}? (R = 8.314 JK^{-1}mol^{-1})$

asked Jun 26, 2018 by meena.p

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The average K.E of an ideal gas in calories per mole is approximately equal to _______

asked Jun 26, 2018 by meena.p

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Rate of diffusion of a gas is _________

asked Jun 26, 2018 by meena.p

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Kinetic energy of a gas depends upon its

asked Jun 26, 2018 by meena.p

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Gases deviate from the ideal gas behaviour because their molecules

asked Jun 26, 2018 by meena.p

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As the temperature is raised from $20^{\circ}$ to $40^{\circ}C$ , the average kinetic energy of neon atoms charges by a factor of which of the following ?

asked Jun 26, 2018 by meena.p

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Kinetic theory of gases proves

asked Jun 26, 2018 by meena.p

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For an ideal gas, number of moles per litre in term of its pressure P, gas constant R and temperature T is

asked Jun 26, 2018 by meena.p

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Calculate the temperature at which $28g\; N_2$ occupies a volume of 10 litre at $2.46\;atm$

asked Jun 26, 2018 by meena.p

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A gas occupies one litre under atmospheric pressure. What will be the volume of the same amount of gas under 750 mm of Hg at the same temperature?

asked Jun 26, 2018 by meena.p

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Select one correct statement . In the gas equation $PV=nRT$

asked Jun 25, 2018 by meena.p

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Which is not true in case of an ideal gas ?

asked Jun 25, 2018 by meena.p

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According to kinetic theory of gases , the energy per mode of gas is equal to ______

asked Jun 25, 2018 by meena.p

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Helium atom is two times heavier than hydrogen molecule at $298\;K$ , the average kinetic energy of helium is ______

asked Jun 25, 2018 by meena.p

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Which of the following statement is false?

asked Jun 25, 2018 by meena.p

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A pressure of 0.101325 bar when expressed in atmospheres represents

asked Jun 25, 2018 by meena.p

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What will be the minimum pressure required to compress $500\;dm^3$ of air at 1 bar to $200\;dm^3$ at $30^{\circ}C?$

asked Jun 25, 2018 by meena.p

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When 200 milliliters of a gas at constant pressure is heated, its volume

asked Jun 25, 2018 by meena.p

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