Physics-
General
Easy
Question
A wheel having mass m has charges +q and –q on diametrically opposite points. It remains in equilibrium on a rough inclined plane in the presence of uniform vertical electric field E =
- none
The correct answer is: none
Related Questions to study
physics-
Find the force experienced by the semicircular rod charged with a charge q, placed as shown in figure. Radius of the wire is R and the line of charge with linear charge density l is passing through its centre and perpendicular to the plane of wire.
Find the force experienced by the semicircular rod charged with a charge q, placed as shown in figure. Radius of the wire is R and the line of charge with linear charge density l is passing through its centre and perpendicular to the plane of wire.
physics-General
physics-
In a certain region of space, the potential is given by : 
The electric field at the point (1, 1, 1) has magnitude =
In a certain region of space, the potential is given by : The electric field at the point (1, 1, 1) has magnitude =
physics-General
physics-
A uniform electric field having strength 
is existing in x-y plane as shown in figure. Find the p.d. between origin O & A(d, d, 0)
A uniform electric field having strength is existing in x-y plane as shown in figure. Find the p.d. between origin O & A(d, d, 0)
physics-General
physics-
Figure shows equi-potential surfaces for a two charges system. At which of the labeled points point will an electron have the highest potential energy?
Figure shows equi-potential surfaces for a two charges system. At which of the labeled points point will an electron have the highest potential energy?
physics-General
chemistry-
From B2H6 , all the following can be prepared except –
From B2H6 , all the following can be prepared except –
chemistry-General
chemistry-
black coloured compound (A) on reaction with dilH2SO4 gives a gas (B) which on passing in a Solution of an acid (C) gives a white turbidity (D)Gas (B) when passed in an acidified Solution of a compound (E) gives a black precipitate (F) which is Soluble in hot concentrated (C)After boiling this Solution when excess of ammonia Solution is added, a blue coloured compound (G) is formed To the Solution of (E), on addition of acetic acid and aqpotassium ferrocyanide, a chocolate brown precipitate (H) is formed On addition of an aqueous Solution of BaCl2 to an aqueous Solution of (E) white precipitate in Soluble in HNO3 is obtained
When a piece of iron or zinc is added to the Solution of a compound (F) in hot concentrated (C) acid:
black coloured compound (A) on reaction with dilH2SO4 gives a gas (B) which on passing in a Solution of an acid (C) gives a white turbidity (D)Gas (B) when passed in an acidified Solution of a compound (E) gives a black precipitate (F) which is Soluble in hot concentrated (C)After boiling this Solution when excess of ammonia Solution is added, a blue coloured compound (G) is formed To the Solution of (E), on addition of acetic acid and aqpotassium ferrocyanide, a chocolate brown precipitate (H) is formed On addition of an aqueous Solution of BaCl2 to an aqueous Solution of (E) white precipitate in Soluble in HNO3 is obtained
When a piece of iron or zinc is added to the Solution of a compound (F) in hot concentrated (C) acid:
chemistry-General
chemistry-
A sodium salt on treatment with MgCl2 gives white precipitate only on heating The anion of the sodium salt is :
A sodium salt on treatment with MgCl2 gives white precipitate only on heating The anion of the sodium salt is :
chemistry-General
chemistry-
The correct option(s) to distinguish nitrate salts of Mn2+ and Cu2+ taken separately is (are)
The correct option(s) to distinguish nitrate salts of Mn2+ and Cu2+ taken separately is (are)
chemistry-General
chemistry-
For the given aqueous reaction which of the statement(s) is (are) true ? 
For the given aqueous reaction which of the statement(s) is (are) true ?
chemistry-General
chemistry-
The equilibrium 
in aqueous medium at 25°C shifts towards the left in the presence of :
The equilibrium in aqueous medium at 25°C shifts towards the left in the presence of :
chemistry-General
chemistry-
In blue Solution of copper sulphate excess of KCN is added then Solution becomes colourless due to the formation of
In blue Solution of copper sulphate excess of KCN is added then Solution becomes colourless due to the formation of
chemistry-General
chemistry-
The fibre which is less elastic is .............
The fibre which is less elastic is .............
chemistry-General
chemistry-
The soil which is suitable for growing cotton is...
The soil which is suitable for growing cotton is...
chemistry-General
chemistry-
Oxygen differs from the otehr elements of the group. Compounds of oxygen with metals are more ionic in nature and hydrogen bonding is more important for oxygen compounds. Oxygen is never more than divalent because when it has formed two covalent bonds, there are no low energy orbitals which can be used to form further bonds. However, the elements S, Se, Te and Po have empty d-orbitals which may be used for bonding and they can form four or six bonds by unpairing eletctrons. However, the higher oxidation states becomes less stable on descending the group. p - dpThe bond between S and O or Se and O, are much shorter than might be expected for a single bond owing to p interaction between the p-orbital of oxygen and d-orbital of S or Se.
Which of the following statement is incorrect?
Oxygen differs from the otehr elements of the group. Compounds of oxygen with metals are more ionic in nature and hydrogen bonding is more important for oxygen compounds. Oxygen is never more than divalent because when it has formed two covalent bonds, there are no low energy orbitals which can be used to form further bonds. However, the elements S, Se, Te and Po have empty d-orbitals which may be used for bonding and they can form four or six bonds by unpairing eletctrons. However, the higher oxidation states becomes less stable on descending the group. p - dpThe bond between S and O or Se and O, are much shorter than might be expected for a single bond owing to p interaction between the p-orbital of oxygen and d-orbital of S or Se.
Which of the following statement is incorrect?
chemistry-General
chemistry-
Statement - 1 : Reddish brown gas, NO2 when passed through alkalies gives nitrite only.
Statement – 2 : NO2 is acidic in nature and is a mixed anhydride of nitric and nitrous acids.
Statement - 1 : Reddish brown gas, NO2 when passed through alkalies gives nitrite only.
Statement – 2 : NO2 is acidic in nature and is a mixed anhydride of nitric and nitrous acids.
chemistry-General
