Chemistry-
General
Easy
Question
When chlorine (Cl2) water in excess is added to a salt solution containing chloroform, chloroform layer turns pale yellow. Salt contains :
- Br–
- I–
The correct answer is: Br–
Related Questions to study
chemistry-
Zinc pieces are added to acidified solution of SO32 – . Gas liberated can :
Zinc pieces are added to acidified solution of SO32 – . Gas liberated can :
chemistry-General
chemistry-
Statement - 1 : Silica is added as a flux in reverberatory furnace, in the extraction of copper from copper pyrites.
Statement - 2 : Silica decreases the melting point of the ore and remove the impurity of lead sulphide as PbSiO3 .
Statement - 1 : Silica is added as a flux in reverberatory furnace, in the extraction of copper from copper pyrites.
Statement - 2 : Silica decreases the melting point of the ore and remove the impurity of lead sulphide as PbSiO3 .
chemistry-General
physics-
Which of the following wiring diagrams could be used to experimentally determine R using ohm's law? Assume an ideal voltmeter and an ideal ammeter.
Which of the following wiring diagrams could be used to experimentally determine R using ohm's law? Assume an ideal voltmeter and an ideal ammeter.
physics-General
physics-
In the arrangement shown in figure when the switch S2 is open, the galvanometer shows no deflection for l = L/2. When the switch S2 is closed, the galvanometer shows no deflection for l = 5L 12. The internal resistance (r) of 6 V cell, and the emf E of the other battery are respectively
In the arrangement shown in figure when the switch S2 is open, the galvanometer shows no deflection for l = L/2. When the switch S2 is closed, the galvanometer shows no deflection for l = 5L 12. The internal resistance (r) of 6 V cell, and the emf E of the other battery are respectively
physics-General
physics-
A battery of emf 
= 12 V is connected across a 4m long uniform wire having resistance 4 
/m. The cells of small emfs 
= 2V and 
= 4V having internal resistance 2 and 6 respectively, are connected as shown in the figure. If galvanometer shows no deflection at the point N, the distance of point N from the point A is equal to
A battery of emf = 12 V is connected across a 4m long uniform wire having resistance 4 /m. The cells of small emfs = 2V and = 4V having internal resistance 2 and 6 respectively, are connected as shown in the figure. If galvanometer shows no deflection at the point N, the distance of point N from the point A is equal to
physics-General
physics-
In the given potentiometer circuit length of the wire AB is 3 m and resistance is R = 4.5 . The length AC for no deflection in galvanometer is
In the given potentiometer circuit length of the wire AB is 3 m and resistance is R = 4.5 . The length AC for no deflection in galvanometer is
physics-General
physics-
An ammeter A of finite resistance, and a resistor R are joined in series to an ideal cell C. A potentiometer P is joined in parallel to R. The ammeter reading is I0 and the potentiometer reading is V0. P is now replaced by a voltmeter of finite resistance. The ammeter reading now is I and the voltmeter reading is V
An ammeter A of finite resistance, and a resistor R are joined in series to an ideal cell C. A potentiometer P is joined in parallel to R. The ammeter reading is I0 and the potentiometer reading is V0. P is now replaced by a voltmeter of finite resistance. The ammeter reading now is I and the voltmeter reading is V
physics-General
physics-
In the figure, the potentiometer wire AB of length L and resistance 9r is joined to the cell D of emf e and internal resistance r. The cell C’s emf is e/2 and its internal resistance is 2r. The galvanometer G will show no deflection when the length AJ is
In the figure, the potentiometer wire AB of length L and resistance 9r is joined to the cell D of emf e and internal resistance r. The cell C’s emf is e/2 and its internal resistance is 2r. The galvanometer G will show no deflection when the length AJ is
physics-General
physics-
The length of a potentiometer wire is l. A cell of emf E is balanced at a length l/3 from the positive end of the wire. If the length of the wire is increased by l/2. At what distance will the same cell give a balance point
The length of a potentiometer wire is l. A cell of emf E is balanced at a length l/3 from the positive end of the wire. If the length of the wire is increased by l/2. At what distance will the same cell give a balance point
physics-General
physics-
The figure shows a metre-bridge circuit, with AB = 100 cm, X = 12 and R = 18 , and the jockey J in the position of balance. If R is now made 8 , through what distance will J have to be moved to obtain balance?
The figure shows a metre-bridge circuit, with AB = 100 cm, X = 12 and R = 18 , and the jockey J in the position of balance. If R is now made 8 , through what distance will J have to be moved to obtain balance?
physics-General
Physics-
A 6 V battery of negligible internal resistance is connected across a uniform wire of length 1 m. The positive terminal of another battery of emf 4V and internal resistance 1 is joined to the point A as shown in figure. The ammeter shows zero deflection when the jockey touches the wire at the point C. The AC is equal to
A 6 V battery of negligible internal resistance is connected across a uniform wire of length 1 m. The positive terminal of another battery of emf 4V and internal resistance 1 is joined to the point A as shown in figure. The ammeter shows zero deflection when the jockey touches the wire at the point C. The AC is equal to
Physics-General
physics-
In the figure shown for gives values of R1 and R2 the balance point for Jockey is at 40 cm from A. When R2 is shunted by a resistance of 10 , balance shifts to 50 cm. R1 and R2 are (AB = 1 m):
In the figure shown for gives values of R1 and R2 the balance point for Jockey is at 40 cm from A. When R2 is shunted by a resistance of 10 , balance shifts to 50 cm. R1 and R2 are (AB = 1 m):
physics-General
physics-
A Wheatstone's bridge is balanced with a resistance of 625 in the third arm, where P, Q and S are in the 1st, 2nd and 4th arm respectively. If P and Q are interchanged, the resistance in the third arm has to be increased by 51 to secure balance. The unknown resistance in the fourth arm i
A Wheatstone's bridge is balanced with a resistance of 625 in the third arm, where P, Q and S are in the 1st, 2nd and 4th arm respectively. If P and Q are interchanged, the resistance in the third arm has to be increased by 51 to secure balance. The unknown resistance in the fourth arm i
physics-General
physics-
By error, a student places moving-coil voltmeter V (nearly ideal) in series with the resistance in a circuit in order to read the current, as shown. The voltmeter reading will be
By error, a student places moving-coil voltmeter V (nearly ideal) in series with the resistance in a circuit in order to read the current, as shown. The voltmeter reading will be
physics-General
physics-
In the circuit shown the resistance of voltmeter is 10,000 ohm and that of ammeter is 20 ohm. The ammeter reading is 0.10 Amp and voltmeter reading is 12 volt. Then R is equal to
In the circuit shown the resistance of voltmeter is 10,000 ohm and that of ammeter is 20 ohm. The ammeter reading is 0.10 Amp and voltmeter reading is 12 volt. Then R is equal to
physics-General
