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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 65051. |
dyfind dxx. 3: If y-cosec x + cot x |
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| 65052. |
n. In the given figure, the radius of the outer circle is 7 units; then the radius of theinner circle isA) 72 units B) 7 2-1 unitsC) units14D) T2_ÄŞ units |
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Answer» 2(Radius of outer circle)=2*7=14 Now Diagonal ²=14²+14²=196+196=392 diagonal=√392=14√2 So, outer radius+diameter of inner circle+outer radius=14√2 7+diameter of inner circle+7=14√2 diameter of inner circle=14√2-14radius=7(√2-1). Option b is correct |
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| 65053. |
2. The flow of energy in food chain is unidirectional why? |
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Answer» The flow of energyin the ecosystem is said to beunidirectionalbecause theenergylost as heat from the living organisms of afood chaincannot be reused by plants in photosynthesis. During the transfer ofenergythrough successive trophic levels in an ecosystem, there is a loss ofenergyall along the path. |
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| 65054. |
6. A village, having a population of 4000, requires 150 litres of water per head per dahas a tank measuring 20 m x 15 m x 6 m. For how many days will the water of thislast? |
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| 65055. |
a plus b ka hol square |
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Answer» (a+b)² =a²+b²+2ab |
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| 65056. |
a plus b the whole square |
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Answer» (a+b)² = a² + b² + 2ab ( identity) |
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| 65057. |
2 X square + 3 X ka DY DX |
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| 65058. |
urn the compasses slowly to dvement around in one instant.Think, discuss and writeHocew many circles can you draw with a givenEXERCISE 14.1I.Draw a circle of radius 3.2 cm.wo circles of t |
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| 65059. |
How many planes can be made to pass through three distinct points? |
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Answer» In order for a plane to be created and passed through points, it requires about 3 points positioned in a non collinear manner. |
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| 65060. |
a plus b ka whole square barabar |
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| 65061. |
(1/x + y/3)ka whole cube |
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Answer» 1/x3 +y3/27 +y/x2 +y2/3x copy main |
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| 65062. |
X + 2 ka 2 whole square |
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| 65063. |
by letter ELORA be 5!120.Ans.2.1 Havemany w13. There amany wdistinctEXERCISE 2(D)-1There are 20 students in a class. In how manyways can a monitor be chosen ?1. |
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Answer» The number of ways = 20! |
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| 65064. |
2. Given that x is an acute angle and that3 \tan x-2=4 \cos 35.3^{\circ}calculate:a) tan x |
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| 65065. |
6. Prove that the line joining the middle points of the opposite sides of a quadrilatand the join of the middle points of its diagonals meet in a point and bisect one |
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| 65066. |
3. If π < x <3 π , thensin is equal to1+sin x冗2(a) sec x -tan(b) sec x + tan x (c) tan x -secx (d) none of these |
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| 65067. |
do plant need minerals? |
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Answer» Plants needthirteen differentmineralsfrom the soil in order to fully develop. Six of these nutrients areneededin large quantities. These six essential nutrients are nitrogen, phosphorus, potassium, magnesium, sulfur and calcium. ... Without these nutrients, growth and survival would not occur. plant need thirteen different minirals fro the soil in order to fully develop. plant need servel different minerals form soil bcz of full development Plants needthirteen differentmineralsfrom the soil in order to fully develop. Six of these nutrients areneededin large quantities. These six essential nutrients are nitrogen, phosphorus, potassium, magnesium, sulfur and calcium. ... Without these nutrients, growth and survival would not occur Plants needthirteen differentmineralsfrom the soil in order to fully develop. Six of these nutrients areneededin large quantities. These six essential nutrients are nitrogen, phosphorus, potassium, magnesium, sulfur and calcium. ... Without these nutrients, growth and survival would not occur. yes plants need nutrients... they need minerals.. they get from soil. |
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| 65068. |
a + b ka whole square |
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Answer» (a+b)²= a² + 2ab + b² Please hit the like button if this helped you a+b whole square is a square + b square+2ab |
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| 65069. |
A+ b ka whole square |
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Answer» . (a + b)2= a2+ b2+ 2ab |
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| 65070. |
If tan(x/2)= cosec x-sin x, then find the value of tan^2(x/2) |
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Answer» Thanks bekar app h |
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| 65071. |
\left. \begin{array} { l } { \text { If } \operatorname { tan } x - \operatorname { tan } ^ { 2 } x = 1 \text { then the value of } } \\ { \operatorname { tan } ^ { 4 } x - 2 \operatorname { tan } ^ { 3 } x - \operatorname { tan } ^ { 2 } x + 2 \operatorname { tan } x + 1 \text { is equal to } } \end{array} \right. |
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Answer» tanx-tan^2x=1so tan^2x-tanx+1=0 sk tan^2x-tanx=-1now tan^4x-2tan^3x-tan^2x+2tanx+1=tan^4x-tan^3x-tan^3x-tan^2x+tanx+tanx+1=tan^2x(tan^2x-tanx)-tanx(tan^2x+tanx)+2tanx+1=-tan^2x-tan^3x-tan^2x+2tanx+1=-2tan^2x-tan^3x+2tanx+1=2+2tanx+1=3+2tanx |
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| 65072. |
I. How to distinguish between phenol and benzylPoulami Das)alcohol? |
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Answer» Phenyl group is obtained by replacing one hydrogen atom from benzene. Benzyl group is obtained by replacing one hydrogen atom from methyl group attached to the benzene ring in toluene. Phenyl= C6H5 , Benzyl=C6H5-CH2 Phenyl groups refer to a benzene ring present in the form of substitution. It has the formula C6H5- Benzyl Group refers to a phenyl group attached with CH2- group. The formula for benzyl is C6H5CH2- Thus the difference between benzyl and phenyl functional groups is that benzyls have an extra CH2. |
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| 65073. |
सीमा ज्ञात कीजिए Evaluate the limit :1. X-a ya when x→a.5x -a |
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| 65074. |
t7. If Îą andbe the zeores of the quadratic polynomical 3x + 5x + 7, Evaluateth |
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| 65075. |
(a) 3 tan-' x (b) tan solo fun"x (a) |
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| 65076. |
\int _ { - 1 } ^ { 1 } \frac { 1 } { x ^ { 3 } } d x |
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| 65077. |
\int _ { - 1 } ^ { 1 } ( x + 1 ) d x |
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Answer» integration((x+1)dx)-1 to 1=(x^2/2+x)-1 to 1=1/2(1-1)+(1+1)=0+2=2 |
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| 65078. |
4+If tan x -, then find the value of, +ba-b-If tan x2, then find the value of\frac{a+b}{a-b}+\sqrt{\frac{a-b}{a+b}} |
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| 65079. |
\int ( 1 - 3 x ) ( 1 + x ) d x |
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| 65080. |
13-4714. IfA= 1 112 0 18) --- den wenig -12 1 21and B=11 2 4 , then verify (BA)B-A2 |
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| 65081. |
i Illu. 20: IfA-1 21and B-, findAB and BA. Is ABBA?(April 2005) |
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| 65082. |
\int _ { - 1 } ^ { 1 } 5 x ^ { 4 } \sqrt { x ^ { 5 } + 1 } d x |
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| 65083. |
16 9Find the area enclosed by the elipse 11.16 9OR硐聊看你 :log sin x dxEvaluate :T/2log sin x dx |
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| 65084. |
\int _ { - 1 } ^ { 1 } \frac { x \operatorname { sin } ^ { - 1 } x } { \sqrt { 1 - x ^ { 2 } } } d x = 2 |
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| 65085. |
Evaluate the following integrals:Integration(7-2x)^5 dx |
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Answer» Correction* The final answer has denominator as 12 . |
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| 65086. |
7. Evaluate the following integrals:x( log x) dx |
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| 65087. |
ExercisEvaluate the following integrals.(x3-2X2 +3)dx on R. |
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| 65088. |
\begin{array} { l } { \text { 2. Evaluate the following integrals : } } \\ { \text { (i) } \int \left( x + \frac { 1 } { x } \right) d x } \end{array} |
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| 65089. |
(a)-1(b) 1(c) p(d) p“2 |
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| 65090. |
d the following integrals in\int\left(4 e^{3 x}+1\right) d x |
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| 65091. |
If x3 - 16x2 + ax + b has (x - 5) as a factor and leaves a remainder 12, when divided by(x-3), find the value of a and b. |
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Answer» Above answer is absolutely correct.. 👍👍📝 The value of a= 73The value of b= - 90 The answer is a= 73& b= -90 90 is the best answer a=73b=-90 is right solution of this problem sum. A=73 and B=-90 it is verified value of a=73b=-90. is right solution of this problem sum. |
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| 65092. |
L 45०. 00) 60९... (Gi) 75° (४) कोई नहीं |
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| 65093. |
find the smallest 5-digit number which on being divided by 6, 9, 12 and 18 leaves aremainder 3 in each case.Abab ere areandL.C |
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Answer» smallest five digit number=10000l.c.m of 6,9,12,18=3610008 is completely divisible by 36.but acc. to question leaves remainder 3 then10008+3=10011. ans. 10011 is the right answer 10011 is the right answer. 1001 is the correct answer. |
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| 65094. |
A stack of 10 bedsheets is 85.5 cm high.One bedsheet is.........mm thick. |
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Answer» 1 bedsheet = 85.5/10 = 8.55mm |
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| 65095. |
4. What is the greatest 3-digit number, which is elally U5. Find the numbee greatest number of 4-digits, which is exactly divisible by 14,42,56.8 12 and 16 leaves no remainde |
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Answer» Find L.C.M. (14, 42, 56) = 168 You have to find largest four digit number which is divisible by 168, so take the largest 4 digit number = 9999 and divide it by 168. 9999 ÷ 168 = 59.5 So your number is 168 = 168 * 59 = 9912 determine the greatest 5-digit number which is exactly divisible by each of 8,15 and 32 the greatest 3 digit even number |
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| 65096. |
42. If the points A (4, 3) and B (x, 5) are on the circle with centre O (2, 3); find the value of12)x. |
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| 65097. |
Find the following integrals i |
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| 65098. |
a Evaluat the following integrals:i) frede |
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| 65099. |
dxFind the integrals ofsin?CO |
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| 65100. |
\int 1 . \int \frac { 1 } { 5 - 4 \operatorname { sin } x } d x |
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