Q.30 The magnitude of three vectors is such that P + Q = R. Then the angle between P and Q is ______.Ans 1. 60°2. 0°3. 90°4. 45°Correct Ans Provided: 3
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Q.43Ans 1. A – 2, B – 3, C – 12. A – 3, B – 1, C – 23. A – 2, B – 1, C – 34. A – 1, B – ...
Q.24 The S.I. unit of coefficient of viscosity is ______.Ans 1. Nms-12. Nm-2s3. Nm-1s4. Nm-2Correct Ans Provided: 2
Q.45 The advantages of natural gas are:I. It burns easily without any smoke. Hence it is very useful as a domestic fuel.II. It has a very high calorific value (55 kJ/g) which is good for heating.
Q.47 The body with higher Kinetic energy when a plastic ball and an iron ball are moving with a momentum of 5 Kgms-1 is ______. (Here mass of iron ball is greater than the mass of plastic ball)
Q.26 Statement-A: van Arkel method is very useful for removing all the oxygen and nitrogen present in the form of impurity in certain metals like Zr and Ti.Statement-R: In van Arkel method, the metal is converted into ...
Q.25 The correct increasing order of the oxidizing metals in the electrochemical series is:Ans 1. Mg < Zn < Cu < Ag2. Ag < Cu < Zn < Mg3. Cu < Ag < Mg < Zn4. Mg < ...
Q.46 The velocity of sound is maximum in ______.Ans 1. Water2. Iron3. Vacuum4. OxygenCorrect Ans Provided: 2
Q.36 Given below are two statements. Identify the CORRECT statement(s). Statement A: Unit of Force in S.I. Unit is Kgms-1Statement B: Unit of Power in S.I. unit is Kgms-3Ans 1. Statement A and Statement B are correct2. Statement ...
Q.18 Which among the followings is NOT a metallic factor affecting chemical corrosion?Ans 1. Electrode potential2. Hydrogen over voltage of the surface3. Presence of different phases in the surface of the metal4. Rate of flow of oxygenCorrect Ans ...
