List of top Questions asked in VITEEE

A galvanometer has current range of 15 mA and voltage range 750 mV. To convert this galvanometer into an ammeter of range 25 A, the required shunt is?

The denial cell is balanced on 125 cm length of a potentiometer. Now, the cell is short-circuited by a resistance of 2Ω and the balance is obtained at 100 cm. The internal resistance of the denial cell is?

Four resistances of 10Ω, 60Ω, 100Ω, and 200Ω respectively taken in order are used to form a Wheatstone’s bridge. A 15V battery is connected to the ends of a 200Ω resistance, the current through it will be?

A circuit has a self-inductance of 1 H and carries a current of 2A. To prevent sparking, when the circuit is switched off, a capacitor which can withstand 400 V is used. The least capacitance of the capacitor connected across the switch must be equal to?

If the nuclear fission piece of uranium of mass 5.0 g is lost, the energy obtained in kWh is?

Current in the circuit will be?

An installation consisting of an electric motor driving a water pump lets 75 L of water per second to a height of 4.7 m. If the motor consumes a power of 5 kW, then the efficiency of the installation is?

A potential difference across the terminals of a battery is 50 V when 11 A current is drawn and 60 V, when 1 A current is drawn. The emf and the internal resistance of the battery are?

Beyond which frequency, the ionosphere bands any incident electromagnetic radiation but do not reflect it back towards the earth?

A metallic surface ejects electrons. When exposed to green light of intensity I but no photoelectrons are emitted, when exposed to yellow light of intensity 1 it is possible to eject electrons from the same surface by?

The amplification factor of a triode is 50. If the grid potential is decreased by 0.20 V, what increase in plate potential will keep the plate current unchanged?

If $a, b, c$ are three non-coplanar vectors and $p, q, r$ are reciprocal vectors, then $(la + mb + nc). (lp + mq + nr)$ is equal to

The standard molar heat of formation of ethane, $CO_2$ and water are respectively $-21.1, -94.1$ and $-68.3\, kcal$. The standard molar heat of combustion of ethane will be

The equivalent conductivity of a solution containing $2.54\, g$ of $CuSO _{4}$ per $L$ is $91.0\, W ^{-1} cm ^{2} eq ^{-1}$. Its conductivity would be

If we add impurity to a metal those atoms also deflect electrons. Therefore,

The solubility product of $Ag _{2} CrO _{4}$ is $32 \times 10^{-12}$. What is the concentration of $CrO _{4}^{-}$ions in that solution?

According to Bohr?s theory, the angular momentum for an electron of $3rd$ orbit is

Which of the following hydrogen bonds are strongest in vapour phase?

Which of the following isomerism is shown by ethyl acetoacetate?

The rate constant for forward reaction and backward reaction of hydrolysis of ester are $1.1 \times 10^{-2}$ and $1.5 \times 10^{-3}$ per minute respectively. Equilibrium constant for the reaction is $CH _{3} COOC _{2} H _{5}+ H _{2} O \rightleftharpoons CH _{3} COOH + C _{2} H _{5} OH$

A gaseous reaction $X_2(g) \to Y + \frac{1}{2} Z(g)$ There is increase in pressure from $100 \,mm$ to $120 \,mm$ in $5$ minutes. The rate of disappearance of $X_2$ is

The volume strength of $1.5 \, N \, H_2O_2$ solution is

In the reaction, $8 Al +3 Fe _{3} O _{4} \longrightarrow 4 Al _{2} O _{3}+9 Fe$ the number of electrons transferred from the reductant to the oxidant is

The bond angles of $NH _{3}, NH _{1}^{+}$and $NH _{2}^{-}$are in the order