Chemistry-
General
Easy
Question
Graphite is also known as
- White lead
- Red lead
- Black lead
- All the above
The correct answer is: Black lead
Related Questions to study
Chemistry-
Coal is an impure form of carbon in which percentage of carbon varies from _____ to _____
Coal is an impure form of carbon in which percentage of carbon varies from _____ to _____
Chemistry-General
Chemistry-
The mass of the electron is:
The mass of the electron is:
Chemistry-General
Chemistry-
What is the ratio of mass of an electron to the mass of a proton?
What is the ratio of mass of an electron to the mass of a proton?
Chemistry-General
Chemistry-
In Rutherford’s atomic model, the electrostatic force of attraction between the positively and negatively charged particles is counter balanced by
In Rutherford’s atomic model, the electrostatic force of attraction between the positively and negatively charged particles is counter balanced by
Chemistry-General
Physics-
Two coils have a mutual inductance 0.005 H The current changes in the first coil According to equation I =I0 sin 
where I0 = 10A and 
= 100 
radian / second The maximum value of e.m. fin the second coil is
Two coils have a mutual inductance 0.005 H The current changes in the first coil According to equation I =I0 sin where I0 = 10A and = 100 radian / second The maximum value of e.m. fin the second coil is
Physics-General
Physics-
The energy of the cm waves is of the order of 15 ke VTO which part of the spectrum does it belong ?
The energy of the cm waves is of the order of 15 ke VTO which part of the spectrum does it belong ?
Physics-General
Physics-
Which of the following relations is correct?
Which of the following relations is correct?
Physics-General
Physics-
What is the ratio of the charges of two conducting spheres of radii r1 & r2 which have equal surface charge density ?
What is the ratio of the charges of two conducting spheres of radii r1 & r2 which have equal surface charge density ?
Physics-General
Physics-
A non–uniform rope of length l hangs from a ceiling. Mass per unit length of rope (m) changes as m = m0 e y , where y is the distance along the string from its lowest point. Then graph between square of velocity of wave and y will be best represented as :
A non–uniform rope of length l hangs from a ceiling. Mass per unit length of rope (m) changes as m = m0 e y , where y is the distance along the string from its lowest point. Then graph between square of velocity of wave and y will be best represented as :
Physics-General
Physics-
A thin horizontal movable plate P is separated from two fixed horizontal plates P1 and P2 by two highly viscous liquids of coefficient of viscosity h1 and h2 as shown, where h2 = 4h1 . Area of contact of movable plate with each fluid is same. If the distance between two fixed plates is h, then the distance h1 of movable plate from upper fixed plate such that the movable plate can be moved with a constant velocity by applying a minimum constant horizontal force F on movable plate is (assume velocity gradient to be uniform in each liquid).
A thin horizontal movable plate P is separated from two fixed horizontal plates P1 and P2 by two highly viscous liquids of coefficient of viscosity h1 and h2 as shown, where h2 = 4h1 . Area of contact of movable plate with each fluid is same. If the distance between two fixed plates is h, then the distance h1 of movable plate from upper fixed plate such that the movable plate can be moved with a constant velocity by applying a minimum constant horizontal force F on movable plate is (assume velocity gradient to be uniform in each liquid).
Physics-General
Physics-
In a cylinder-piston arrangement, air is under a pressure P1. A soap bubble of radius r lies inside the cylinder, soap bubble has surface tension T. The radius of soap bubble is to be reduced to half, The new pressure P2 to which air should be compressed isothermally. (Assume r is very small as compared to height of cylinder)
In a cylinder-piston arrangement, air is under a pressure P1. A soap bubble of radius r lies inside the cylinder, soap bubble has surface tension T. The radius of soap bubble is to be reduced to half, The new pressure P2 to which air should be compressed isothermally. (Assume r is very small as compared to height of cylinder)
Physics-General
Maths-
Which of the following is an equivalence relation ?
Which of the following is an equivalence relation ?
Maths-General
Maths-
If R = {(x,y): x, yÎN, y is the remainder when x is divided by 7}.Then sum of all numbers in range of R
If R = {(x,y): x, yÎN, y is the remainder when x is divided by 7}.Then sum of all numbers in range of R
Maths-General
Maths-
Let 
and 
then R is
Let and then R is
Maths-General
Maths-
Let 
and 
then the relation R on A is
Let and then the relation R on A is
Maths-General
