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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.
| 1. |
What will be the value of the expressiongiven below ifthe ‘+'sign is replaced withis replaced with "x'; is replacedwith '-'; and , is replaced with"+"?65-10+5÷3×4=? |
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| 2. |
SUL. Mums3) Natural detergents and Man-made detergents |
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| 3. |
What are detergents chemically? State the reason for the suitability ofdetergents for washing, even in the case of water having calcium andmagnesiumions.near noint 2 |
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Answer» Detergents is the sodium salt of a long chain Benzene Suplhonic acid which has cleansing properties in water.A detergent has a large non ionic hydrocarbon group and an ionic group like sulphonate group, SO³⁻ Na⁺.Examples of detergents are :Sodium n-dodecyl benzene sulphonate and sodium n-dodecyl sulphateCleansing action of detergent is same as soap.Merits of using Detergent :1. detergents can be used even with hard water where as soaps are not suitable for use with hard water.2. Detergents have stronger cleansing action than soaps.3. detergents are more soluble in water than soaps.Demerits of using Detergents:1. Detergents are not biodegradable that is they cannot be composed by micro organisms like bacteria 2. Detergents causes water pollution . Reason for the having calcium and magnesium ions :Detergents react with with Ca²⁺ and Mg²⁺ ions in hard water forming soluble compounds. lather is formed easily and cleansing action is efficient. |
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| 4. |
(ahatwasthepatient'stemperatureat1p.m.?(b) When was the patient's temperature 38.5° C?39373635342312a.m. a.m. a.m.noon p.m. p.m. p.m.Time →910 |
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Answer» With reference to the graph, at 12 noon, the patient's temperature was 38.5 C |
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| 5. |
The area of a square is 576 cm’. Find the lengthof its side and diagonal. |
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Answer» length of side is 24cm and diagonal Is 33.9411cm length of the side =24cmdiagonal=33.94cm length of the the side is 24 cm and diagonal is 33.9411cm |
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| 6. |
if a wire is bent into the shape of square whose area is 81 cm² . when the same wire is bent into a semicircular shape, then find the area of the semicircle |
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| 7. |
find the night of a traingle whosehave is to cm700 cm² |
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Answer» Your question is not complete. Post a complete question. your q is not complete Area of triangle = 1/2 × base × height700 = 1/2 × 70 × h700 = 35 × hh = 700/35h = 20cm |
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| 8. |
A matchstick pattern of letter F |
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Answer» __|__|is the matchstick pattern of f.4 matchsticks will be used |
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| 9. |
(2%5)×(-3%7)-1%6×3%2+1%14×2%5 |
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| 10. |
2/5×(-3/7)-1/6×3/2+1/14×2/5 |
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| 11. |
255×255 |
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Answer» 255²=(250+5)²=250²+5²+(2×250×5)=62500+25+2500=65025 |
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| 12. |
867 ਅਤੇ 255 |
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Answer» 612 is the right answer |
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| 13. |
EXERCISE 15.1i. Thefollowing graph shows the temperature of a patient in a hospital, recordedevery hour(a) What was the patient's temperature at 1 p.m. ?(b) When was the patient's temperature 38.5° C3938乙3735349 1011 12 1 2 3a.m. a.m. a.m. noon p.m. p.m. p.m.Time -» |
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| 14. |
the cost of 14 m of cloth is 1890, find the cost of 6 m 8! lUll.oans is285.60, what will be the cost of 15 such soaps? |
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| 15. |
Asoap manufacturer is capable of selling soaps at 6.36 per piece afteradding the VAT at the rate of6%. Still, he will make a profit of 20% on the sale what is his manufacturing cost per soap? |
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Answer» CP = ?SP = Rs6.36VAT = 6%Profit = 20%SP = CP + profit amount + VAT amount=CP + 20% CP + (120%CP) * 6% 6.36 = CP [ 1 + 0.20 + 1.20 * 6 /100 ] CP = 6.36 / 1.272 = Rs5.00 |
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| 16. |
I=Integral(1/(x*sqrt(-x^3 %2B 1)), x) |
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| 17. |
I=Integral(1/(sqrt(x) %2B (x^2)^(1/3)), x) |
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| 18. |
57. Ifcosece-cot θ=10<θ<πthen cos θǐs equal to2a) 5/3 b) 3/5 c) -3/5 d) -5/3 |
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| 19. |
i=Integral(1/(a^2 - 2*a*cos(x) %2B 1), (x, 0, pi)) |
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| 20. |
azxFind the approximate value of 8,95 |
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Answer» Let f(x) = sqrt(x)f'(x) = d/dx [ sqrt(x) ] = d/dx [x^(1/2) ] = (1/2) x^(-1/2) = 1 / 2 x^(1/2) = 1 / 2sqrt(x) Let x=9sqrt(9)=3 sqrt(8.95)= f(8.95)= f(9) + (8.95-9) f'(9)= 3 + (-0.05) [1 / 2 sqrt(9)]= 3 - 0.05 / 6= 2.991667 |
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| 21. |
Find the perimeter of a square whose area is 6889 m |
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Answer» let side of square be xcm Area of square=2(side)^2 given that area =6889cm^2therefore,6889=2*x^2x^2=6889/2X^2=3444.5x=root(3444.5)x=58.69cm perimeter of square=4(side) =4*58.69 =234.76cm |
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| 22. |
SET-2Question PaperNo. of Questions: 20Marks for each correct Answer: 4Class (4,5 & 6)Time: 40 Minutes1. Ajit plans to make a cubical box of matchsticks as shown with no matchstick used insideHow many matchsticks does he require to make the box?24(a) 56(4) 52(B) 48(d) 44 |
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Answer» option B is the correct answer option c is the right answer option c is the right answer option c is the right answer 52 is the right answer option c is the right answer C is the answer of the follow i know this is a byjus question paper hai maine bhi ya wala sum kiya tha the right answer is 52, c I don't know please like 52 is the correct answer. Please like as best |
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| 23. |
15) Find the perimeter of a square whose area is 7921m2. |
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| 24. |
3. Find the perimeter of the square whose area is2500 mm |
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| 25. |
amples for Practicea b-c d, then find the greate(1) (2) (3) (4)73255 3 147 7 22. If-+-x--= x, then x? |
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Answer» (3/7 x 14/24)+5/7= 1/4+5/7=0.96428571 |
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| 26. |
Find the perimeter of a square whose area is 255 sq cm |
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Answer» area of the square= 225 cm²side of the square= √225= 15 cmtherefore, perimeter of square= 4 × sides= 4 × 15= 60 cm |
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| 27. |
1. The foliowing graph shows the temperature of a patient in a hospital, recordadevery houra) Whar was the pati nt's temperature at I p.m. ?(b) When was the patient's temperature 38.5 C3133534102Time |
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Answer» 1) Patient's temperature at 1 PM is 36.5°C . 2) At 12 noon, the temperature was 38.5°C |
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| 28. |
Find the perimeter of a square whose area is 12 2/35 |
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Answer» right thanks |
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| 29. |
H. Find the length of the side of a square whose area 441m'. |
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Answer» Given:area=441m²length=? Solution:area= length ²441=length ²length=√441length=21m area = 441m^2length = sqrt(441)length = 21 m |
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| 30. |
integral cosax.cosax dx |
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| 31. |
Evaluate the following integral1.5 Tdx1.7* |
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Answer» / x/ x^4-a^4dx; x^2=t, 2x=dt; /1/2dt/t^2-(a^2)^2= =1/2 / dt/t^2-(a^2)^2; =1/2 / 1/2a^2ln|(-a^2)/ t+a^2)|+c =1/4a^2|x^2-a^2= x^2+ a^2|+c yes it is the correct answer / x/ x^4-a^4dx; x^2=t,2x=dt;. /1/2dt/t^2-(a^2)^2==1/2 / dt/t^2-(a^2)^2. =1/2 / 1/2a^2ln|(-a^2)/ t+a^2)|+c =1/4a^2-a^2=x^2+x |
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| 32. |
Example 7 : A solid toy is in the form ofahemisphere surmounted by a right circular cone. Theheight of the cone is 2 cm and the diameter of thebase is 4 cm. Determine the volume of the toy. Ifaright circular cylinder circumscribes the toy, find thedifference of the volumes of the cylinder and the toy. |
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Answer» Like If you find it useful |
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| 33. |
14. Ifa s3+, find a?b3-.53+45 |
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| 34. |
Ajit Kaur bought a 50 kg sack of sugarfor 1750, but as sugar prices fell shehad to sell it at 32 per kg. How muchloss did she incur? |
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Answer» 50kg of sugar = Rs 1750she selled it for Rs 32 due to prices fell downSo 32×50=1600cost price 17501750_1600= Rs 150Therefore he had a loss of Rs 150 |
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| 35. |
Solve the tollowing simultaneouse(I) 2-3 |
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| 36. |
Simplify the tollowing7 14 7 3 |
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Answer» 2 1/7 ÷ 1 3/14 + 5/7×1/3 = 15/7 ÷ 17/14 + 5/21 = 15/7×14/17 + 5/21 = 30/17 + 5/21 = (30×21 + 5×17)/21×17 = (630 + 85)/357 = 715/357 = 2 1/357 |
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| 37. |
Soivethetollowing:1) 16 is what percent of 50? |
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Answer» 16/50*100= 32 percentagethanksplease like the solution 👍 ✔️ |
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| 38. |
11. A normal human eye can see an object making an angle of1.8° at the eye. What is the approximate height (h) of objectwhich can be seen by an eye placed at a distance of I.4 m?1.8° |
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Answer» tan(1.8°) = h/1.40.0314262660 = h/1.4h = 0.0314262660 x 1.4h = 0.0439967724 m thanks |
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| 39. |
(169)ěšcos 2x +2 cos x = 1el,sin' x(2-cos* x) =9.(b) -1(c)5 |
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| 40. |
number.Mohan has 10000 rupees. He bought wheat for 4500 and rice for t 1600. Hemuch money was left with him?naian inancha limhe |
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Answer» the correct answer is 37 First plz like my answer and give it the best answer 3900 rupees will be left with him..... as total cost of wheat and rice is 6100 rupees total money=10000wheat=rs4500rice=1600rstotal amount=4500+1600=6100rsmoney left=10000-6100rs=3900rs 10000-6100=3900 is the right answer Total money=$10000Expend=$(4500+1600) $6100Money left=$3900 Total money=10000rupeesrice buy=1600Wheat buy=4500Total amount=6100Money left =10000-6100=3900is a correct answer of the given question the answer for this question 3900 the totol cost of wheat and rice is 6100 3900 is the right answer Mohan has= ₹10000He brought wheat & rice for=(₹4500+1600) =₹6100How much money was left with him=(₹10000-6100) ₹3900Ans:-₹3900 money was left with him |
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| 41. |
There are 18 sacks of rice in a van. If each sack weighs 105 kg, what is thetotal weight of all the sacks?(1) |
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| 42. |
There areeaten. How many apples are left?52 apples in a basket. 30 of them were |
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Answer» to find left apples subtract themhence52-30=22apples. Total apples in a basket=52Apples eaten =30therefore.. 52-30=22 Ans=22 total apples= 52 total apples -32= 52 - 3220 sorry it is wrong total apples =52 eaten = 30 52-30= 22 |
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| 43. |
a cos θ + b sin θ = m and a sin θ-b cos θ = n, prove that(m2 + 112) = (a2 + b2) |
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| 44. |
rtf anherming pple was eaten by herbronerho had the larger share?How much part of the apple did Somu eat? Wmuch? |
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Answer» i can't understand what you have written |
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| 45. |
Define universal Gravitation constant and write its value |
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| 46. |
Answer the following by estimating.3. The headline read "A MILLION VOTEDTODAY."Actually 90,018 people voted eachhour for 12 hours. Did the newspaper give asensible account of the number of votes castin the election? |
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Answer» Total votes= 90018*12= 1080216, which is just a little more than a million. So the newspaper reported right. give one word ans or two word answer name the aspect of democracy that allows give one or to word answer name the a spect of democracy that allows individuals to cast a vote. |
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| 47. |
X-CLASS MATHEMATICS2EXERCISE - 2.1. Find the degree of each of the polynomials giver() -x++3 (i) x² + x - 5 (iii)(iv) 31° + 6y3 - 7 (v) 4- y2Which of the following expressions are polyncGive reasons for your answer.(1) 3x2 - 2x + 5 () x + 12 |
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Answer» 1. x^52.x^23.x^64.y^2 |
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| 48. |
A man on the top of a vertical tower observes a car moving at a uniform speed comingdirectly towards it. If it takes 12 minutes for the angle of depression to change from30° to 45°, how soon after this, will the car reach the tower? Give your answer to thenearest second. |
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| 49. |
The surn of three numbers of an AP is 27 and their product is 405. Find the numbers |
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Answer» thanx |
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| 50. |
Dahi Vada 25/-Chilli Rice 18/-------------------------Total ? |
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