Chemistry-
General
Easy
Question
Which is an example of autocatalysis?
- Hydrolysis of methyl acetate
- Decomposition of TNG
- Oxidation of oxalic acid by KMn04
- All of the above
The correct answer is: All of the above
Related Questions to study
Physics-
The potential difference across inductor VL is:
The potential difference across inductor VL is:
Physics-General
Physics-
The variation of current in the inductor with time can be represented as:
The variation of current in the inductor with time can be represented as:
Physics-General
Physics-
The current i L is
The current i L is
Physics-General
Physics-
The figure shows variation of R X and X L C with frequency f in a series L, C, R circuit Then for what frequency point, the circuit is inductive
The figure shows variation of R X and X L C with frequency f in a series L, C, R circuit Then for what frequency point, the circuit is inductive
Physics-General
Physics-
When an ac source of emf 
sin
is connected across a circuit, the phase difference between the emf e and the current i in the circuit is observed to be 
, as shown in the diagram If the circuit consists possibly only of RC or LC in series, find the relationship between the two elements
When an ac source of emf sin is connected across a circuit, the phase difference between the emf e and the current i in the circuit is observed to be , as shown in the diagram If the circuit consists possibly only of RC or LC in series, find the relationship between the two elements
Physics-General
Physics-
When an AC source of emf E = E0 Sin (100t) is connected across a circuit, the phase difference between the emf E and the current I in the circuit is observed to be , as shown in the figure If the circuit consists only of R– C(or)R–L(or) L–C series Possible values of the elements of the circuit are
When an AC source of emf E = E0 Sin (100t) is connected across a circuit, the phase difference between the emf E and the current I in the circuit is observed to be , as shown in the figure If the circuit consists only of R– C(or)R–L(or) L–C series Possible values of the elements of the circuit are
Physics-General
Chemistry-
1 g of a metal required 50 mL of 0.5 N HCl to dissolve it The equivalent mass of the metal is:
1 g of a metal required 50 mL of 0.5 N HCl to dissolve it The equivalent mass of the metal is:
Chemistry-General
Physics-
If the reading of the voltmeters vary with time AS:
sin
and 
then the unknown circuit element x is a:
a) pure (or ideal) inductor
b) practical inductor
c) pure (or ideal) capacitor
d) practical capacitor
If the reading of the voltmeters vary with time AS: sin and then the unknown circuit element x is a:
a) pure (or ideal) inductor
b) practical inductor
c) pure (or ideal) capacitor
d) practical capacitor
Physics-General
Physics-
When two A.C generators of emfs V1 and V2 and same frequency connected in series, the emf across A and B is ( 
= phase angle difference between the generators):
When two A.C generators of emfs V1 and V2 and same frequency connected in series, the emf across A and B is ( = phase angle difference between the generators):
Physics-General
Physics-
A combination of elements is enclosed in a black box and the voltage and currents are measured across this black box The expression for applied voltage; and the current flowing in it is 
were 
rad/sec Then the wrong statement is:
A combination of elements is enclosed in a black box and the voltage and currents are measured across this black box The expression for applied voltage; and the current flowing in it is were rad/sec Then the wrong statement is:
Physics-General
Physics-
A current source sends a current 
When connected across an unknown load gives a voltage output of,
across that load Then voltage across the current source may be brought in phase with the current through it by:
A current source sends a current When connected across an unknown load gives a voltage output of, across that load Then voltage across the current source may be brought in phase with the current through it by:
Physics-General
Physics-
In the circuit, as shown in the figure, if the value of R.M.S current is 2.2 ampere, the power factor of the box is
In the circuit, as shown in the figure, if the value of R.M.S current is 2.2 ampere, the power factor of the box is
Physics-General
Physics-
A generator with an adjustable frequency of oscillation is connected to resistance, R =100 
, inductances, L1 =1.7 MH and L2 = 2.3 MH and capacitances 
and 
The resonant angular frequency of the circuit is
A generator with an adjustable frequency of oscillation is connected to resistance, R =100 , inductances, L1 =1.7 MH and L2 = 2.3 MH and capacitances and The resonant angular frequency of the circuit is
Physics-General
Physics-
A constant voltage at different frequencies is applied across a capacitance C as shown in the figure Which of the following graphs 
Correctly depicts the variation of current with frequency.
A constant voltage at different frequencies is applied across a capacitance C as shown in the figure Which of the following graphs
Correctly depicts the variation of current with frequency.
Physics-General
Physics-
The voltage across a pure inductor is represented by the following diagram Which one of the following diagrams will represent the current
The voltage across a pure inductor is represented by the following diagram Which one of the following diagrams will represent the current
Physics-General
