Chemistry-
General
Easy

Question

Lucas reagent is a mixture of:

  1. text  Conc.  end text H C l text  +anhydrous  end text Z n C l subscript 2
  2. text  Conc.  end text H C l plus text  hydrous  end text Z n C l subscript 2
  3. text  Conc.  end text H N O subscript 3 plus text  hydrous  end text Z n C l subscript 2
  4. text  Conc.  end text H N O subscript 3 plus text  anhydrous  end text Z n C l subscript 2

The correct answer is: text  Conc.  end text H C l text  +anhydrous  end text Z n C l subscript 2

Book A Free Demo

+91

Grade*

Related Questions to study

General
physics-

If a stone s to hit at a point which is at a distance d away and at a height h above the point from where the stone starts, then what is the value of initial sped u, if the stone is launched at an angle Q?

h equals open parentheses u sin invisible function application theta close parentheses t minus fraction numerator 1 over denominator 2 end fraction g t to the power of 2 end exponent
d equals open parentheses u cos invisible function application theta close parentheses t blank o r blank t equals fraction numerator d over denominator u cos invisible function application theta end fraction
h equals u sin invisible function application theta. fraction numerator d over denominator u cos invisible function application theta end fraction minus fraction numerator 1 over denominator 2 end fraction g. fraction numerator d to the power of 2 end exponent over denominator u to the power of 2 end exponent cos to the power of 2 end exponent invisible function application theta end fraction
u equals fraction numerator d over denominator cos invisible function application theta end fraction square root of fraction numerator g over denominator 2 left parenthesis d tan invisible function application theta minus h right parenthesis end fraction end root

If a stone s to hit at a point which is at a distance d away and at a height h above the point from where the stone starts, then what is the value of initial sped u, if the stone is launched at an angle Q?

physics-General
h equals open parentheses u sin invisible function application theta close parentheses t minus fraction numerator 1 over denominator 2 end fraction g t to the power of 2 end exponent
d equals open parentheses u cos invisible function application theta close parentheses t blank o r blank t equals fraction numerator d over denominator u cos invisible function application theta end fraction
h equals u sin invisible function application theta. fraction numerator d over denominator u cos invisible function application theta end fraction minus fraction numerator 1 over denominator 2 end fraction g. fraction numerator d to the power of 2 end exponent over denominator u to the power of 2 end exponent cos to the power of 2 end exponent invisible function application theta end fraction
u equals fraction numerator d over denominator cos invisible function application theta end fraction square root of fraction numerator g over denominator 2 left parenthesis d tan invisible function application theta minus h right parenthesis end fraction end root
General
biology

Match the following and mark the correct options

Match the following and mark the correct options

biologyGeneral
General
physics-

The frequency of a FM transmitter without signal input is called

The frequency of a FM transmitter without signal input is called

physics-General
General
physics-

In a communication system, noise is most likely to affect the signal

In a communication system, noise is most likely to affect the signal

physics-General
General
physics-

In the satellite communication, the uplinking frequency range is

In the satellite communication, the uplinking frequency range is

physics-General
General
physics-

Frequency range used in down linking in satellite communication is

Frequency range used in down linking in satellite communication is

physics-General
General
physics-

Cellular Mobile works in the frequency range of

Cellular Mobile works in the frequency range of

physics-General
General
physics-

The frequency which is not part of AM broadcast

The frequency which is not part of AM broadcast

physics-General
General
physics-

For TV transmission the frequency range employed

For TV transmission the frequency range employed

physics-General
General
physics-

The frequency band used for radar relay systems & T.V is

The frequency band used for radar relay systems & T.V is

physics-General
General
physics-

Frequency ranges for micro waves are :

Frequency ranges for micro waves are :

physics-General
General
physics-

The higher frequency TV broad casting bands range is

The higher frequency TV broad casting bands range is

physics-General
General
maths-

cos invisible function application left parenthesis alpha minus beta right parenthesis equals 1 text  and  end text cos invisible function application left parenthesis alpha plus beta right parenthesis equals 1 over c where alpha comma beta element of left square bracket negative pi comma pi right square bracket Pairs alpha comma beta which satisfy both the equations is/are


cos invisible function application left parenthesis alpha minus beta right parenthesis equals 1 text  and  end text cos invisible function application left parenthesis alpha plus beta right parenthesis equals 1 over c where alpha comma beta element of left square bracket negative pi comma pi right square bracket Pairs alpha comma beta which satisfy both the equations is/are

maths-General

General
maths-

The number of integral values of k for which the equation 7 cos invisible function application x plus 5 sin invisible function application x equals 2 k plus 1 has a solution is

The number of integral values of k for which the equation 7 cos invisible function application x plus 5 sin invisible function application x equals 2 k plus 1 has a solution is

maths-General
General
maths-

The number of distinct real roots of open vertical bar table attributes columnalign center center center columnspacing 1em end attributes row cell sin invisible function application x end cell cell cos invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell sin invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell cos invisible function application x end cell cell sin invisible function application x end cell end table close vertical bar equals 0 in the interval negative pi over 4 less or equal than x less or equal than pi over 4 is


The number of distinct real roots of open vertical bar table attributes columnalign center center center columnspacing 1em end attributes row cell sin invisible function application x end cell cell cos invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell sin invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell cos invisible function application x end cell cell sin invisible function application x end cell end table close vertical bar equals 0 in the interval negative pi over 4 less or equal than x less or equal than pi over 4 is

maths-General