Archives

Can The Rusting Of Iron Nails Occur In Distilled Water Justify Your Answer

Yes. Rusting of iron nail occur in distilled water. Rusting is a redox reaction, which is formed by the reaction of iron (fe) an oxygen (O). In... View Article

The Conventional Direction Of Flow Of Currentis

The conventional direction of flow of current is in opposite direction of electrons.ie. from positive terminal to negative terminal of the cell.... View Article

If Pa And Pb Are Tangents To The Circle With Centre O And The Angle APB = 60o Then FInd The Measure Of Angle OAB

As given: PA and PB are the two tangents to the circle. O be the centre of circle. Since PA and PB are tangents to the circle from P PA... View Article

Let F(X) = Sin4x + Cos4x.Then F Is An Increasing Function In The Interval

= = = = = = = Explore more such questions and answers at BYJU’S.... View Article

The First Step In Formulating An Lp Problem Is (A) Graph The Problem (B) Perform A Sensitivity Analysis (C) Identify The Objective And The Constraints (D) Understand The Managerial Problem Being Faced.

The correct answer is (D) Understand The Managerial Problem Being Faced. Explore more such questions and answers at BYJU’S.... View Article

A Transformer Works On: (A) Ac Only (B) Dc Only (C) High Voltage Only (D) Both A And B

The correct answer is (C) High Voltage Only Explore more such questions and answers at BYJU’S.... View Article

The molecule which has zero dipole moment is (A)BF₃ (B)NF₃ (C) CiO₂ (D) CH₂Cl₂

Answer: (A)BF3 A dipole moment arises in any system in which there is a separation of charge. They can, therefore, arise in ionic bonds as well... View Article

Gravitational Mass Is Proportional To The Gravitational________

The answer is Force. Gravitational mass is proportional to the gravitational force Explore more such questions and answers at BYJU’S.... View Article

What Is Meant By Tertiary Structure Of Proteins

The tertiary structure of a protein refers to the three-dimensional arrangement of its polypeptide chain in space. The tertiary structure of a... View Article

State The Cause Of Accelerated Eutrophication

The cause of accelerated eutrophication are: Fertilizers Runoff of fertilizers from neighboring farmland into the water bodies causes algal... View Article

A boy pushing a ring of mass 2kg and radius 0.5m with a stick as shown in the figure. the stick applies a force of 2n on the ring and rolls it without slipping with an acceleration of 0.3 m/s 2. the coefficient of friction between the ground and the ring is large enough that rolling always occurs and the coefficient of friction between the stick and the ring is (p/10). the value of p is

As given in the question, The acceleration is caused by the net horizontal force. produces torques which are opposite in direction... View Article

A Particle X Moving With A Certain Velocity Has A De-broglie Wavelength Of 1a0 . If Particle Y Has A Mass Of 25 % That Of X And Velocity 75% That Of X, De Broglie’s Wavelength Of Y Will Be:

Sol: As given in the question: De brogile wavelength Explore more such questions and answers at BYJU’S.... View Article

If 18 G Of Glucose Is Present In 1000 G Of Solvent, The Solution Is Said To Be:

Given, the mass of glucose is 18 g The molar mass of glucose = 180 g/mol Therefore, the molality = If 18 g of glucose is present in... View Article

Where Is The Industrial Fields Is Radioactivity Used

The applications of radioactivity in industrial fields are: Radioactive substances are used as fuel in nuclear reactors to generate power. It... View Article

A solution has a 1:4 mole ratio of pentane to hexane. the vapour pressure of the pure hydrocarbons at 20°c is 440 mm of hg for pentane and 120 mm of hg for hexane. The mole fraction of pentane in the vapour phase would be?

Mole fraction of pentane solution = Mole fraction of hexane solution = The total pressure of the solution, Therefore, the fraction... View Article

When An Object Is Placed At A Distance Of 25 Cm From A Mirror, The Magnification Is M 1 . The Object Is Moved 15 Cm Away With Respect To The Earlier Position, Magnification Becomes M , If M 2m 1=4, The Focal Length Of The Mirror Is

, , , , , , , ---[1], ---[2], Now by dividing equation [1] by 2.5, we get: ---[3] By subtracting equations [1] and [3], we... View Article

Which Elements Are Considered As Balancing Elements? (A) C And H, (B) N And S, (C)Ca And K, (D) Mg And Fe

The correct answer is (C) Ca And K. Calcium (Ca), Magnesium (Mg) and Potassium (K) are considered as balancing elements that counteract to toxic... View Article

State Division Algorithm For Polynomials

The division of polynomials is similar to the division of numbers. The division algorithm for polynomials states that if f(x) and g(x) are... View Article

Students of a school staged a rally for a cleanliness campaign. They walked through the lanes in two groups. One group walked through the lanes AB, BC, and CA; where the Other through AC, CD, and DA. Then they cleaned the area enclosed within their lanes. If AB=9m,BC=40m,CD=15m,DA=28m and ∠B = 900, which group cleaned more area and by how much? Find the total area cleaned by the students.

Given: is a right-angled triangle. Using Pythagoras Theorem Area of * base * height In Area of... View Article

The Decimal Expansion Of Sqrt 5 Is:(A) 2.236 (B) Finite Decimal (C) Non – Terminating Recurring (D) Non – Terminating Non-recurring

The correct answer is :(A) 2.236 Explore more such questions and answers at BYJU’S.... View Article

M	T	W	T	F	S	S
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31