General
General
Easy
Question
Four a first order reaction, the rate constant is 6.909 min-1 the time taken for 75% convertion in minutes is
The correct answer is:
Related Questions to study
Physics-
The turn ratio of a transformers is given as 2:3. If the current through the primary coil is 
, thus calculate the current through load resistance
The turn ratio of a transformers is given as 2:3. If the current through the primary coil is , thus calculate the current through load resistance
Physics-General
Physics-
In transformer, core is made of soft iron to reduce
In transformer, core is made of soft iron to reduce
Physics-General
Physics-
When the current through a solenoid increases at a constant rate, the induced current
When the current through a solenoid increases at a constant rate, the induced current
Physics-General
Physics-
An electric motor operates on a 
supply and a current of 
. If the efficiency of the motor is 30%, what is the resistance of the winding of the motor
An electric motor operates on a supply and a current of . If the efficiency of the motor is 30%, what is the resistance of the winding of the motor
Physics-General
Physics-
A loss free transformer has 500 turns on its primary winding and 2500 in secondary. The meters of the secondary indicate 
at 
under these conditions. The voltage and current in the primary is
A loss free transformer has 500 turns on its primary winding and 2500 in secondary. The meters of the secondary indicate at under these conditions. The voltage and current in the primary is
Physics-General
Physics-
An aeroplane in which the distance between the tips of the wings in 50 m is flying horizontally with a speed of 360 
over a place where the vertical component of earth’s magnetic field is 
. The potential difference between the tips of the wings would be
An aeroplane in which the distance between the tips of the wings in 50 m is flying horizontally with a speed of 360 over a place where the vertical component of earth’s magnetic field is . The potential difference between the tips of the wings would be
Physics-General
Physics-
The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an ac supply of 
. The secondary will have an output of
The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an ac supply of . The secondary will have an output of
Physics-General
Physics-
According to Faraday’s law of electromagnetic induction
According to Faraday’s law of electromagnetic induction
Physics-General
Physics-
A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 rad
. If the horizontal component of earth’s magnetic field is 
then the emf developed between the two ends of the conductor is
A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 rad. If the horizontal component of earth’s magnetic field is then the emf developed between the two ends of the conductor is
Physics-General
Maths-
Let 
be an equivalence relation on a finite set 
having 
elements. Then, the number of ordered pairs in is
Let be an equivalence relation on a finite set having elements. Then, the number of ordered pairs in is
Maths-General
General
In a first order reaction the 𝑎/(𝑎−𝑥) was found to be 8 after 10 minute. The rate constant is:
In a first order reaction the 𝑎/(𝑎−𝑥) was found to be 8 after 10 minute. The rate constant is:
GeneralGeneral
Maths-
Let be the set of all students in a school. A relation is defined on as follows:
iff 
and 
have the same teacher”
Let be the set of all students in a school. A relation is defined on as follows:
iff and have the same teacher”
Maths-General
Maths-
Let and 
be two equivalence relations on a set 
Then,
Let and be two equivalence relations on a set Then,
Maths-General
Maths-
Let be a fixed positive integer. Define a relation on the set 
of integers by, 
Then, is not
Let be a fixed positive integer. Define a relation on the set of integers by, Then, is not
Maths-General
Maths-
The value of 
is
The value of is
Maths-General
