This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
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ofluomuel[NCERTwaterthis tank last ?14. water flows in a tank 150 m Ă 100 m at the base, through a pipe whose cross-section is 201mby 1.5 dm at the speed of 15 km/hour. In what time, will the water be 3 metres deep |
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| 2. |
bucket is emptied olr tho Sconical heap is 24 cm, find the radius and slant herghtater in a canal, 6 m wide and 1.5 m deep, is flowing with a speed oflarea will it irrigate in 30 minutes, if 8 cm of standing water is needed0finternal diameter 20 cm from a canal into a cyflows through th |
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Answer» Speed of flowing of water from canal is 10km/h , means length of water flows in 1 hour = 5 km , so length of water flows in 30 minutes = 5km Now, volume of water flowing from canal = length of water flows in 30 minutes × breadth of canal × deep of canal = 5000m × 6m × 1.5m = 45000 m³ Let area of field = x m² Then, volume of water irrigates into the field = area of field × height of water during irrigation = x m² × 8× 10⁻² m = 0.08x m³ Now, volume of water flowing from canal = volume of water in field 45000 m³ = 0.08x m³ x = 562500 m² We know, 1 hectare = 10000 m² So, area of field in hectare = 562500/10000 = 56.25 hectares |
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| 3. |
\frac{p^{2}-q^{2}}{x+y} \div \frac{p-q}{x^{2}-y^{2}} |
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| 4. |
(b). If y is mean proportional between x and z, prove that xyz (xy+zxy yzx. ( |
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Answer» Y is the mean proportional between x and z so, y/z = x/y y^2 =xz now, LHS =xyz(x + y + z)^3 =y(xz){x + y + z }^3 =y^3(x + y + z)^3 =(xy + yz + zx)^3 = RHS |
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| 5. |
12. if x, y, z are in A.P., then prove that(i) y + z, z + x, x + y,are in A.P2 |
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| 6. |
13.Using properties of determinant prove thaty2 z2-z) (z-x) (xy |
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| 7. |
40. The sum of 1-1+1-1+1-1.. toeven number of terms is-zero\begin{array}{l}{\text { (1) } 2} \\ {\text { (2) }} \\ {\text { (3) }-1} \\ {\text { (4) }+1}\end{array} |
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| 8. |
\begin{array} { l } { \frac { x + y } { \ { x y } } = 2 \text { and } \frac { x - y } { x y } = 6 , \text { then the value of } x \text { is } } \\ { \text { (1) } 4 } & { \text { (2) } \frac { 1 } { 4 } } \\ { \text { (3) } 2 } & { \text { (4) } - 1 / 2 } \end{array} |
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| 9. |
\left. \begin{array} { l } { \text { (1) Brother } } \\ { \text { How many times does the } 29 \text { th day of a month occur in } 400 \text { consecutive y } } \\ { \text { (1) } 3596 \text { times } } \end{array} \right. |
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Answer» Every year except feb all have 29 in the monthso 11×400=4400now every 4 year feb has 29 days except 100th,200th,300th year so that's 97.so total 4400+97=4497 times 29th day of a month occur in 400.consecutive years. |
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| 10. |
19. In the given figure PQ 11 ST, <POR= < 110 , and RST 13o-find |
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Answer» Please hit the like 👍 Interior angles on the same side of thetransversal: The pair of interior angles on the same side ofthe transversal are called consecutive interior angles or allied angles or cointerior angles. If a transversal intersects two Parallel Linesthen each pair of interior angles on the same side of the transversal is supplementary. If a transversal intersects two lines such thata pair of alternate interior angles is equal then the two lines are parallel. _________________________________________________________________ Given, PQ || ST, ∠PQR = 110° and ∠RST = 130° Construction, A line XY parallel to PQ and ST is drawn. ∠PQR+∠QRX= 180° (Angles on the same side of transversal.)⇒110° + ∠QRX= 180°⇒∠QRX= 70° Also,∠RST+ ∠SRY= 180° (Angles on the same side of transversal.)⇒130° + ∠SRY= 180°⇒∠SRY= 50° Now,∠QRX+∠SRY+∠QRS = 180°⇒70°+ 50°+ ∠QRS= 180°⇒∠QRS= 60° |
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| 11. |
\left. \begin{array} { l } { \text { If } \operatorname { sin } \theta + \operatorname { cos } \theta = 1 , \text { then } \operatorname { sin } \theta \operatorname { cos } \theta = } \\ { \text { (a) } 0 } & { \text { (b) } 1 } \\ { \text { (c) } 2 } & { \text { (d) } 1 / 2 } \end{array} \right. |
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Answer» sin + cos = 1sqauring both sidessin² + cos² + 2sinsin = 1so sincos = 0/2 = 0option (c) is correct |
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| 12. |
\begin{array} { c } { \text { Question 3. Factorise the following } } \\ { \text { (i) } 9 x ^ { 2 } + 6 x y + y ^ { 2 } } \end{array} |
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| 13. |
rin = 2.8 cm.4. In the given figure, it is given that ABD = <CDB-2PQB-90°.If AB = x units, CD = y units and PQ-2 units, prove that111+AB BDx BDCD BD y BLAdd the two results.] |
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| 14. |
15. In the adjoining figure, ABCD is a square. A linesegment CX cuts AB at X and the diagonal BD atO such that LCOD = 80° and LOXA = x. Find thevalue of x. |
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| 15. |
[NCERT 14 Water flows in a tank 150 m x 100 m at the base, through a pipe whose cross-section is 2 dmby 1.5 dm at the speed of 15 km/hour. In what time, will the water be 3 metres deep ? |
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| 16. |
5. In Figure 5, AB 11 CD and PQ is the transversal. If 21:22-3:2, find the measure of all the12.angles from I to 8.Fis. 5 |
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| 17. |
HenCt pibocuCD, PQ are perpendicular to BD.ABAB,7.(AS2)prove that +11eziumt eachcritengles(ASB |
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| 18. |
CD, PQ are perpendicular to BD.GRAB = x, CD-y and PQ-Zprove that |
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| 19. |
PRIORITY - IAB, CD, PQ are perpendicular to BD, AB =X,CD = y and PQ = z then prove that+-=-. (RA)2xQ D |
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| 20. |
A train is 100 meter long and is running at the speed of 30 km per hour. Find the time it will take to pass a man standing at a crossing |
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Answer» 0.1/30 hrs =L/V 0.1*3600/3012sec but hoe |
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| 21. |
ŕ¤ŕ¤ż . B [| Syaf (rst huldne meh |
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| 22. |
29-trthe given figure PQ 11ST.<PQR=<110°, and RST= 130°find <QRS |
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Answer» 60degrees |
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| 23. |
Prove that\frac{\sin (x+y)}{\sin (x+y)}=\frac{\tan x+\tan y}{\tan x-\tan y} |
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| 24. |
14. Water flows in a tank 150 m Ă 100 m at the base, through a pipe whose cross-section is 2 dmby 1.5 dm at the speed of 15 km/hour. In what time, will the water be 3 metres deep?T |
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Answer» Length of cross section of pipe = 2 dm = 0.2 mBreadth of cross section of pipe = 1.5 dm = 0.15 mArea of cross section = 0.2 × 0.15 = 0.03 m^2Speed of water = 15 km/h = 15000 m/hVolume of water flown in 1 h = 0.03 × 15000 = 450 m^3Dimensions of the water tank = 150 × 100Volume of water for a depth of 3 m = 150 × 100 × 3 = 45000 m^3Time taken to fill the tank to a depth of 3 m = (45000) / (450) = 100 hrs. |
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| 25. |
6. AB, CD, PQ are perpendicular to BDAB x, CD y and PQ-z prove that(Problem Solving) |
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| 26. |
In fig. from an external point P. PA and PB are tangents to the circle with centre O.If CD is another tangent at point E to the circle and PA-12 cm. Find the perimeter of ∆ PCD |
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Answer» Given :PA and PB are tangent to the circlewith centre O. CD is a tangent to the circle at E which intersects PA and PB in C and Drespectively and PA = 12 cm. Lengths oftangents drawn from as external point to a circle are equal. ∴ PA = PB = 12 cmCA = CEDB = DENowperimeter of ΔPCD = PC + CD + PD = PC + (CE+ ED) + PD = PC + (CA+ DB) + PD = (PC +CA) + (DB + PD) = PA + PB = 12 cm +12 cm= 24 cm. |
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| 27. |
19 In the given figure PO II ST, -POR- <110°, and RST-130° find -ORSfigure PC) 11 ST. <pQR-<1100, and RST-130°find <QRS |
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Answer» A line XY parallel to PQ and ST is drawn. ∠PQR+∠QRX= 180° (Angles on the same side of transversal.)⇒110° + ∠QRX= 180°⇒∠QRX= 70° Also,∠RST+ ∠SRY= 180° (Angles on the same side of transversal.)⇒130° + ∠SRY= 180°⇒∠SRY= 50° Now,∠QRX+∠SRY+∠QRS = 180°⇒70°+ 50°+ ∠QRS= 180°⇒∠QRS= 60° Thank you |
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| 28. |
3 Water in a canal 30 dm wide and 12 dm deep, is flowing with a velocity of 100 kmper hour. How much area will it irrigate in 30 minutes, if 8 cm of standing water isdesired? |
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| 29. |
In Fig. 6.31, if PO Il ST, POR 110 andZRST 130°, find Z QRS[Hint : Draw a line parallel to ST throughpoini R.130.110Fig, 6.31 |
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| 30. |
homials, suchpx qx - r is zero.2The angles of a triangle are x, y and 40째. The difference between two angles x and yis 30째. Find x and y.[110]EPage 13 of 16 |
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| 31. |
19. In the given figure PO I ST, PR110", and RST 1M ind sFt |
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| 32. |
In the given figure, AB AC, show thatAD>AB, where D is a point on CB produced. |
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Answer» in the provided solution consider points B and D as vice versa |
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| 33. |
2then10. If none of the angles x, y and (x + y) is an odd multiple oftan x + tan ytan (x + y) = 1-tan x tan y |
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| 34. |
OR (atra)In the given figure, AB |[PQ)| CD, AB-x, CD-y anPQ-z, then prove that-+-- |
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| 35. |
in the given figure, AB I pa l CD, AB -x units,CD -y units and PQ - tunits, prove that |
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Answer» ΔABD andΔPQD are similar, as the corresponding sides are parallel. x/z = BD / QD => 1/x = QD /(z * BD) ΔCDB andΔPQB are similar, as corresponding sides are parallel. y/z = BD/ BQ => 1/y = BQ / (z * BD) Add the two equations: 1/x + 1/y = (BQ + QD) / (z * BD) = 1 /z |
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| 36. |
25. In the given figure, AB ll PQ 11 CD , AB=x units , CD= y units and PQ-z units, proverthat-+ry. |
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Answer» ΔABD andΔPQD are similar, as the corresponding sides are parallel. x/z = BD / QD => 1/x = QD /(z * BD) ΔCDB andΔPQB are similar, as corresponding sides are parallel. y/z = BD/ BQ => 1/y = BQ / (z * BD) Add the two equations: 1/x + 1/y = (BQ + QD) / (z * BD) = 1 /z |
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| 37. |
Water in a canal, 30 dm wide and 12 dm deep is flowing with velocity of 10 m/hr.How much area will it irrigate in 30 minutes, if 8 om of standing water is required forirrigation?(A) 250000000 cm2 (B) 25000 m (C) 15000 m (D) 20000 m |
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| 38. |
- 10. By how much is 5643879 smaller than one crore? |
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Answer» 4356121................ 4356121 is the right answer 435612 is the correct answer 435612 is the correct answer of the given question 1,00,00,000-5,643,879=4,356,121 is the answer 4356121....is right ans . 4356121 is the best answer the correct answer is 4356121 of the following question 4356121 is the correct answer |
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| 39. |
what is difference between interpreter and compiler |
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Answer» A compiler is a translator which transforms source language (high-level language) into object language (machine language). In contrast with a compiler, an interpreter is a program which imitates the execution of programs written in a source language. Another difference between Compiler and interpreter is that Compiler converts the whole program in one go on the other hand Interpreter converts the program by taking a single line at a time |
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| 40. |
5. By how much is 47,93,821 smaller than one crore? |
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Answer» 10000000-4793821=5206179 |
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| 41. |
15. By how much is 47,93,821 smaller than one crore? |
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| 42. |
33. By how much is 5643879 smaller than one crore?5612879 |
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Answer» Required number = 1 crore ‒ 564387 = 10000000 ‒ 5643879 = 4356121 ∴ 5643879 is smaller than one crore by 4356121. 10000000 – 5643879Answer = 4356121 Required number = 1 crore ‒ 564387 = 10000000 ‒ 5643879 = 4356121 ∴ 5643879 is smaller than one crore by 4356121. |
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| 43. |
CHUO UTILIthe audio system8. Girish buys an article forprice of the article.count and GST of 5% Find the may357, inclusive of 15% discount and |
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Answer» give clear photo abhay verma The mark price of an article is RS 285.6 15.1725 is the correct answer 15 .1725 is the correct answer of the given question 15. 1725 is the correct answer of the following question |
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| 44. |
ure given below, ABC is a triangle in which AB AC. X and Y are points on AB and ACsuch that AX = AY. Prove that ΔBCE ΔCBY.Y.HOTS] |
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| 45. |
19, In the given figure PO Il ST, <POR<110, and RST-1300 find <ORS |
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Answer» Given, PQ || ST, ∠PQR = 110° and ∠RST = 130° Construction, A line XY parallel to PQ and ST is drawn. ∠PQR+∠QRX= 180° (Angles on the same side of transversal.)⇒110° + ∠QRX= 180°⇒∠QRX= 70° Also,∠RST+ ∠SRY= 180° (Angles on the same side of transversal.)⇒130° + ∠SRY= 180°⇒∠SRY= 50° Now,∠QRX+∠SRY+∠QRS = 180°⇒70°+ 50°+ ∠QRS= 180°⇒∠QRS= 60° -------------------------------------------------------------------please like my answer if you find it useful |
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| 46. |
If length, breadth and surface area of a cuboid are15 cm, 10 cm and 1300 cm2. Find its height. |
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| 47. |
In Fig. 6.28, find the values of x and y and thenshow that AB | |CD.1.50°1300Fig. 6.28 |
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Answer» y=130 (vertically opposite angle) x=130(corresponding angle) |
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| 48. |
014. In the given figure AB-AC then find xC. |
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| 49. |
l. A heap of wood is a pile 5 dm wide, 9 dm long, and 3 dm high. What is the volume of the heap ofwood ? |
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Answer» Volume of heap=l*b*h=5*9*3=135dm^3 |
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| 50. |
8. Sambu's stride is 9 dm long. He walks a distance of 18 Dm. How many stridesdoes he take to walk this distance? |
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Answer» Stride length = 9 dm Distance covered = 18 dm Number of strides required= 18/9= 2 |
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