Which Of The Following Material Is Likely To Have Least Friction.(A) Wood(B) Glass(C) Paper(D) Plastic
The correct answer is (B) Glass Explore more such questions and answers at BYJU’S.
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Sulphide Ores Are Common For Metals
Sulfide ores are frequently associated with a range of important metals, such as Copper (Cu), Lead (Pb), Nickel (Ni), Zinc... View Article
What Is The Formula Of Acrolein
The the chemical formula of Acrolein is C_{3}H_{4}O (OR) CH_{2} = CH – CHO Explore more such questions and answers... View Article
Solve The Following Quadratic Equation By The Formula Method 3×2 + 7x – 20 = 0
Given:\(\begin{array}{l} 3x^{2} + 7x – 20 = 0 \end{array} \) \(\begin{array}{l} \Rightarrow 3x^{2} + 12x – 5x – 20 =... View Article
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... 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... 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. \(\begin{array}{l} \angle... View Article
Let F(X) = Sin4x + Cos4x.Then F Is An Increasing Function In The Interval
\(\begin{array}{l} f(x) = sin^{4} x + cos^{4} x \end{array} \) \(\begin{array}{l} {f}'(x) = 4 sin^{3} x cos x + 4... 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.
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.
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,... 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.
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... 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 bloom... 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 \(\begin{array}{l} 0.3 ms^{-2} \end{array} \) is caused by the net horizontal force. \(\begin{array}{l}... 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: \(\begin{array}{l} m_{Y} = m_{X} * \frac{25}{100} = 0.25m_{X} \end{array} \) \(\begin{array}{l} v_{Y} = v_{X}... 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 =\(\begin{array}{l}... 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.... 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 =\(\begin{array}{l} \frac{1}{1 + 4} = \frac{1}{5} \end{array} \) Mole fraction of hexane solution =\(\begin{array}{l} \frac{4}{1... 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
\(\begin{array}{l}u_{1} = -25cm \end{array} \), \(\begin{array}{l}u_{2} = -25cm + 15cm = -40cm \end{array} \), \(\begin{array}{l}m_{1} = -\frac{v_{1}}{u_{1}} \end{array} \), \(\begin{array}{l}m_{2}... View Article
