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The integuments become ________ after fertilization
answered Nov 26, 2014
Answer : Seed coatThe integuments develop in to ( after fertilization ) seed coats . Outer seed coat...
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Brown Haze is caused by _______
answered Nov 26, 2014
Answer : Particulate matterBrown Haze is caused by particulate matter.
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________ is the pollutant released from air-conditioner
answered Nov 26, 2014
Answer : Chloro fluoro carbonsChlorofluorocarbons (CFC), released from air-conditioners cause sever...
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Movement of water and mineral salts in plant is __________
answered Nov 26, 2014
Answer : OsmosisMovement of water and mineral salts in plant is osmosis
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The total number of groups in modern periodic table is ______
answered Nov 26, 2014
Answer : 18The total number of groups in modern periodic table is 18
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Which metal is a constituent of haemoglobin?
answered Nov 26, 2014
Answer : FeIron is an essential constituent of haemoglobin, myoglobin and a number of enzymes. Iron ...
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The constituent present in baking powder is
answered Nov 26, 2014
Answer : tartaric acidThe constituent present in baking powder is tartaric acid
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Identify the type of reaction taking place in $Fe+CuSO_4\rightarrow Cu+FeSO_4$.
answered Nov 26, 2014
Answer : Displacement reactionA displacement reaction is a type of reaction where part of one reacta...
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The pH of $0.1M$ NaOH is
answered Nov 26, 2014
Answer : 13The pH of $0.1M$ NaOH is 13
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Copper reacts with dilute nitric acid and liberates _______
answered Nov 26, 2014
Answer : Nitrogen dioxide
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Which is the correct answer for the circuit given below?
answered Nov 26, 2014
Answer : $V_1=V_2=V_3$
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The phenomenon of producing a characteristic sound when a material is stuck on a metallic surface is _______
answered Nov 26, 2014
Answer : SonarityThe phenomenon of producing a characteristic sound when a material is stuck on a me...
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________ exists as a dimer.
answered Nov 26, 2014
Answer : $Ca^{2+}$
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______ are alloys of Iron,Aluminium,Nickel and cobalt.
answered Nov 25, 2014
Answer : AlnicosAlnicos are alloys of Iron,Aluminium,Nickel and cobalt.Alnico is referring to a fami...
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Solubility of $KNO_3$
answered Nov 25, 2014
Answer : increases with temperatureSolubility of $KNO_3$ increases with temperature
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Dry ice is an example of ________ process
answered Nov 25, 2014
Answer : sublimationDry ice is an example of sublimation process
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The consumption of electrical energy in the house is measured in terms of
answered Nov 25, 2014
Answer : Kilowatt hourThe consumption of electrical energy in the house is measured in terms of kilo...
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In any electrical circuit,the direction of flow of current is
answered Nov 25, 2014
Answer : opposite to the flow of electronsIn any electrical circuit,the direction of flow of current...
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Atomic clock is based on the principle of periodic vibration in the
answered Nov 25, 2014
Answer : Caesium atomAtomic clock is based on the principle of periodic vibration in the Caesium ato...
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The force experienced by a boy in the merry-go-round is
answered Nov 25, 2014
Answer : centripetal
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The pressure of a given mass of a gas is inversely proportional to its volume when
answered Nov 25, 2014
Answer : The temperature remains constant
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If the mass of the body on the surface of the earth is 50 kg,its mass at the centre of the earth is
answered Nov 25, 2014
Answer : equal to 50 kg
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The energy transformation in mixie and grinder is
answered Nov 25, 2014
Answer : Electrical to mechanical energy
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Sound travels faster in
answered Nov 25, 2014
Answer : air
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A football has less inertia than a stone of the same size because
answered Nov 25, 2014
Answer : football has less mass than the stone.
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The ______ in running water turns a turbine to run a dynamo and produces electricity.
answered Nov 25, 2014
Answer : Kinetic energy
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Light year is the unit to measure
answered Nov 25, 2014
Answer : The distance travelled by the light in a year
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$x=3+\sqrt 8$,then $x^4+\large\frac{1}{x^4}$ is
answered Nov 25, 2014
Answer : 1154$x=3+\sqrt 8$$\large\frac{1}{x}$$=3-\sqrt 8$$x^2=17+6\sqrt 8$$\large\frac{1}{x^2}$$=17-...
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AB is a chord of a circle S subtending an angle of $20^{\large\circ}$ at the centre.Suppose AB has length 1008 units and CD is another chord having length 1512 units,then the angle subtended by CD at the centre is
answered Nov 25, 2014
Answer : $30^{\large\circ}$https://clay6.com/mpaimg/109.png$\sin \theta=\large\frac{756}{504}$$\time...
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It is given that there are 6 straight lines in a plane so that no three of them are concurrent and no two are parallel.Then the number of points of intersection among the given six straight lines is
answered Nov 25, 2014
Answer : 3
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The circle $S_1$ has centre $(1,2)$ and radius 3,the circle $S_2$ has centre at $(9,8)$ and radius 7.The circle $S_1$ and $S_2$ touch at the point whose coordinates are
answered Nov 25, 2014
Answer : $\big(\large\frac{17}{5},\frac{19}{5}\big)$https://clay6.com/mpaimg/107.png$SP^2=(x-1)^2+(y...
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ABC is a triangle with vertices $A(1,2),B(\pi,2),C(1,\pi)$ then the orthocenter of the $\triangle ABC$ has coordinates
answered Nov 25, 2014
Answer : $(1,2)$In a right angled triangle the orthocenter lies at the vertex containing the right a...
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The value of $\sin^25^{\large\circ}+\sin^210^{\large\circ}+\sin^215^{\large\circ}+.....+\sin^290^{\large\circ}$ is
answered Nov 24, 2014
Answer : $10$$\sin^25^{\large\circ}=\cos^2(90-5)^{\large\circ}=\cos^285^{\large\circ}$$\sin^210^{\la...
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If $\sec\theta+\cos \theta=\sqrt 5$,the value of $\sec^2\theta+\cos^2\theta$ is
answered Nov 24, 2014
Answer : 3$(\sec\theta+\cos\theta)^2-2\sec\theta\cos\theta=\sec^2\theta+\cos^2\theta$$\Rightarrow (\...
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The perimeter and area of a sector are $18$ cm and $20$ sq.cm respectively.Then the length of the arc is
answered Nov 24, 2014
Answer : 10 cm or 8 cm
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If each side of a rectangle is increased by $20\%$,then the percentage increase in its area is
answered Nov 24, 2014
Answer : 20%
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If $A=\begin{pmatrix}a&b\\c&d\end{pmatrix}$ where $a,b,c,d \in R$ such that $AB=BA$ for each $2\times 2$ matrix $B$,then $b^2+c^2$
answered Nov 24, 2014
Answer : can have any positive value
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A natural number $K$ is chosen from the set $\{1,2,3,....100\}$ .The probability that it is prime is
answered Nov 24, 2014
Answer : $\large\frac{1}{4}$
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The mean of 16 numbers is $48$.If each number is divided by 4 and diminished by 3,then the new mean is
answered Nov 24, 2014
Answer : 9$\large\frac{\sum x_i}{16}$$=48$$\Rightarrow \sum x_i=16\times 48$When each number divided...
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The numbers are arranged in the descending order : $108,94,88,82,x+7,x-7,60,58,42,39$.If the median is $73$,the value of $x$ is
answered Nov 24, 2014
Answer : 73
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If the sum S of three consecutive even numbers is a perfect square between 200 and 400,then the square root of S is
answered Nov 24, 2014
Answer : 18
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The units digit in the decimal expansion of $7^{25}$ is
answered Nov 24, 2014
Answer : 7
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It is given that there is no solution to the system $x+2y=3,ax+by=4$.Which one of the following is true?
answered Nov 24, 2014
Answer : a can have more than one valueSince it has no solution,then $\large\frac{a_1}{a_2}=\frac{b_...
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Suppose that a quadratic polynomial $x^2+bx+1 \in R$,has two zeroes which are both real then which one of the following is necessarily true?
answered Nov 24, 2014
Answer : b can have infinitely many valuesThe discriminant value $D \geq 0$$\Rightarrow b^2-4\geq 0$...
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Given that $P(x)$ and $Q(x)$ are polynomials of degree 3 with real coefficients,which one of the following is not true?
answered Nov 24, 2014
Answer : deg $[(P(x))^2(Q(x))^3]=15$
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The sum of the first K natural numbers is A,for a certain $K > 1$,the sum of their cubes is B,then $\log_{\sqrt A}B$ is
answered Nov 24, 2014
Answer : 4Sum of natural numbers is $\large\frac{n(n-1)}{2}$$=A$Sum of their cubes is $\big[\large\f...
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Let N be the set of natural numbers and P be the set of prime integers in N.If $A=\{n/n\in N,n$ is a multiple of some prime $P\in P$,then $N-A=\{n\in N/n\in A\}$ is
answered Nov 24, 2014
Answer : a finite set of cardinality greater than 2.
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If $x^a=c^b$ and $x^c=c^a$ then $a^2=$_
answered Nov 5, 2014
$x^a=c^b$ and $x^c=c^a$$x = c^{b/a}$$\therefore (c^{b/a})^c = c^a$$\implies \frac{bc}{a} = a$$\impli...
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If $\big(\large\frac{a}{b}\big)^{x-1}=\big(\large\frac{b}{a}\big)^{x-3}$,then the value of $x$ is _____
answered Nov 5, 2014
$\begin{align*}\frac{a}{b}^{x-1} & = \frac{b}{a}^{x-3} \\ \implies \frac{a}{b}^{x-1} & = \f...
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If $x=2^{2n}$,then the value of $8.x^{\Large\frac{3}{2n}}-8.x^{-\Large\frac{3}{2n}}$ is __
answered Nov 5, 2014
$x = 2 ^{2n}$$8.x^{\Large\frac{3}{2n}}-8.x^{-\Large\frac{3}{2n}}$= $2^3 \times x^{3/2n} - 2^3 \times...
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