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A farmer wishes to grow a 100m² rectangular vegetable garden. since he has with the only 30m barbed wire, he fences three sides of the rectangular garden letting the compound wall of his house act as the fourth side – fence. find the dimensions of his garden

Sol: Let the length of one side be x metres Let the length of the other side be y metres Here one side is a compound wall and 30 m wire is... View Article

If The Frequency Of The Autosomal Dominant Allele Is 0.6 Then Calculate The Frequency Of Recessive Phenotype In A Population Of 6000. (A) 960 (B) 1000 (C) 1200 (D) 4000

The correct answer is (A) 960 The Frequency Of The Autosomal Dominant Allele, P = 0.6 q = 1 - 0.6 = 0.4 The frequency of recessive... View Article

Molarity And Molality Of A Solution Of A Liquid (Mol Wt = 50) In Aqueous Solution Are 9 And 10 Respectively. What Is The Density Of Solution?

Given: The molarity of a solution of a liquid in an aqueous solution is 9 M The molality of a solution of a liquid in an aqueous solution is 10 m... View Article

If 500Ml Of A Gas A At 1000 Torr And 1000Ml Of Gas B At 800 Torr Are Placed In A 2L Container, The Final Pressure Will Be :

Given: As we know: Therefore, the final pressure will be 650 tarr. Explore more such questions and answers at... View Article

In Which Pair Of Species, The Octet Rule Is Not Obeyed? (A) Cf4 And Nf3 (B) Nh3 And Ncl3 (C) Bcl3 And Pcl5 (D) Pf3 And Pocl3

The correct answer is (C) Bcl3 And Pcl5 An atom having electrons less than 8 or more than 8 will not obey the octet rule. The octet rule is... View Article

An urn contains 2 white and 2 black balls. a ball is drawn at random, if it is white it is not replaced into urn, otherwise, it is replaced along with another ball of the same colour. the process is repeated. the probability that the third ball drawn is black is 1−k50. Find the value of k

Sol: There are four possibilities First Ball Second Ball Event White White E1 White Black E2 Black White E3 Black Black E4... View Article

A Millivoltmeter Of 25 Millivolt Range Is To Be Converted Into An Ammeter Of 25-ampere Range. The Value (In Ohm) Of Necessary Shunt Will Be: (A) 1 (B) 0.01 (C) 0.05 (D) 0.001

The correct answer is (D) 0.001 Where G is the resistance of the meter. The value of the shunt required for converting it into ammeter of... View Article

The Following Fig. Shows I-V Graph For A Given Metallic Wire At Two Temperatures T1 And T2.Then, (A)T1 =T2 (B) T2 >T1 (C) T1

The correct answer is (B) T2 >T1 Given: The slope of a I-V graph gives the value of 1/R, as we can see that the slope of graph 1 is... View Article

Somatostatin Is Produced By

Somatostatin is a peptide hormone that inhibits the release of growth hormone, thyroid-stimulating hormone, prolactin and release of numerous... View Article

What Is The Role Of Depressant In The Froth Floatation Process?

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic materials. The role of depressant in the froth... View Article

An Ideal Gas Occupies A Volume Of 2M3 At A Pressure Of 3×10 6Pa. The Energy Of The Gas Is:

For an ideal gas, the internal energy is given as: As [pV=nRT] Where: p = pressure of the gas= V = volume of the gas= By... View Article

Give Reason: Metals Forms Positive Ions.

Metal atoms form positive ions. Because metals are electropositive, which loses electrons and gain a positive charge. Explore more such... View Article

Which Of The Following Instruments Is Used For Measuring Gauge Pressure? A. Manometer B. Barometer C. Hydrometer D. Thermometer

The correct answer is A. Manometer Explore more such questions and answers at BYJU’S.... View Article

Simplify (2X+5)(2X−5)

Given (2x + 5)(2x - 5) Explore more such questions and answers at BYJU’S.... View Article

At a dinner party every two guests used a bowl of rice between them, every three guests used a bowl of dal between them and every four used a bowl of meat between them. There were altogether 65 dishes. How many guests were present at the party?

Let the total number of guests be x. Number of bowls of dhal = Number of bowls of rice = Number of bowls of meat = Therefore,... View Article

The magnetic needle of a tangent galvanometer is deflected at an angle 30 due to a magnet. The horizontal component of earth’s magnetic field 0.34×10⁻⁴T is along the plane of the coil. The magnetic intensity is:

An Angle through which magnet is deflected The Horizontal Component Of Earth's Magnetic Field The Magnetic Intensity Is =... View Article

Calculate The Mass Percentage Of Aspirin (C9H8O 4 ) In Acetonitrile (Ch3Cn) When 6.5G Of C 9H 8O4Is Dissolved In 450 G Of Ch 3Cn.

6.5gm of Aspirin (C9H8O4) dissolved in 450gm of Acetonitrile (CH3CN) Mass percent of aspirin = . . . . . Therefore, the mass percent... View Article

A Car With Vertical Windshield Moves In A Rainstorm At A Speed Of 40 Km/Hr. The Rain Drops Fall Vertically With A Constant Speed Of 20 M/S. The Angle At Which Raindrops Strike The Windshield

Speed of car = 40 km/hr. Therefore, angle at which raindrops strike the windshield is Explore more such questions and answers at... View Article

The Image Of A Candle Flame Formed By A Lens Is Obtained On A Screen Placed On The Other Side Of The Lens. If The Image Is Three Times The Size Of The Flame And The Distance Between Lens And Image Is 80Cm, At What Distance Should The Candle Be Placed From The Lens? What Is The Nature Of The Image At A Distance Of 80Cm And The Lens?

Magnification is 3 times and image distance v = 80cm Magnification = As the object distance is taken as negative; as per sign convention... View Article

Psammophytes Are Plants Growing On ____________ Type Of Soil.(A)Sandy (B) Acidic (C) Alkaline (D) Alluvial

The correct answer is (A)Sandy Psammophytes are small-sized plants marked by a number of adaptations, primarily in deserts, shifting sands and... View Article

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