What Is Ionization Equilibrium
Every mechanism by which electrically neutral atoms or molecules are converted into electrically charged atoms or molecules is ionised in... View Article
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How Do You Identify Electrolytes
Electrolytes are salts or molecules which in solution, ionise completely. As a consequence, electrolyte solutions conduct electricity readily. In solution,... View Article
How Does The Ph Scale Measure Acidity
The scale of pH tests how acidic or fundamental a material is. Basic is a pH greater than 7. As... View Article
Is Negative Delta H Exothermic
Energy is produced in an exothermic reaction when the total energy of the materials is below the total energy of... View Article
Which Ions Will Cause Hardness In Water Sample
The presence of Ca(HCO3)2 and Mg(HCO3)2 bicarbonates of calcium and magnesium induces transient stiffness in water. The presence of soluble... View Article
Why Do We Use Electromagnetic Spectrum
Electromagnetic spectrum, the overall electromagnetic radiation distribution by frequency or wavelength. While all electromagnetic waves propagate in a vacuum at... View Article
Why Ph Is From 1 To 14
The general definition of a solution’s pH value is the negative base-10 log of the solution’s hydronium ion concentration. While... View Article
What Happens When An Ionic Compound Dissolves
The water molecules must be able to stabilise the ions that result from splitting the ionic bond to dissolve an... View Article
The Value Of Tan 70 Tan 20 Tan 50 Is
1) 2 2) 1 3) 0 4) 3 Answer: (1) 2 Solution: 70° – 20° = 50° Taking “tan” on... View Article
Cos 9 Sin 9 Cos 9 Sin 9 Is Equal To
1) tan 26° 2) tan 81° 3) tan 51° 4) tan 54° 5) tan 46° Answer: (4) tan 54° Solution:... View Article
If Alpha Beta Pi 2 And Beta Gamma Alpha Then The Value Of Tan Alpha Is
1) tan β + tan γ 2) 2(tan β + tan γ) 3) tan β + 2 tan γ 4)... View Article
If P Cos 55 Q Cos 65 And R Cos 175 Then The Value Of 1 P 1 Q R Pq Is
1) 0 2) – 1 3) 1 4) None of these Answer: (1) 0 Solution: Given, p = cos 55°... View Article
Sin 120 Cos 150 Cos 240 Sin 330 Is Equal To
1) 1 2) – 1 3) 2/3 4) -(√3 + 1)/4 Answer: (2) – 1 Solution: sin 120° cos 150°... View Article
If Tan Alpha M M 1 And Tan Beta 1 2m 1 Then Alpha Beta Is
1) π/3 2) π/4 3) 0 4) π/2 Answer: (2) π/4 Solution: Given, tan α = m/(m + 1)….(i) tan... View Article
If Sin X Y Sin X Y A B A B Then Tan X Tan Y Is Equal To
1) a2/b2 2) a/b 3) b/a 4) (a2 + b2)/(a2 – b2) Answer: (2) a/b Solution: Given, sin(x + y)/sin(x... View Article
The Value Of Cos 2 Pi 4 Theta Sin 2 Pi 4 Theta Is
The value of cos2(π/4 + θ) – sin2(π/4 – θ) is 1) 0 2) cos 2θ 3) sin 2θ 4)... View Article
Tan 80 Degrees Tan 10 Degrees Tan 70 Degrees Is Equal To
1) 0 2) 1 3) 2 4) 3 Answer: (3) 2 Solution: 80° – 10° = 70° Taking “tan” on... View Article
If Tan A 2 Tan B Cot B Then 2 Tan A B Is Equal To
1) tan B 2) 2 tan B 3) cot B 4) 2 cot B Answer: (3) cot B Solution: Given,... View Article
If Sin A 1 Root10 And Sin B 1 Root5 Where A And B Are Positive Acute Angles Then A B
1) π 2) π/2 3) π/3 4) π/4 Answer: (4) π/4 Solution: Given, sin A = 1/√10 and sin B... View Article
If Sin A Cos B A And Sin B Cos A B Then Sin A B Is
1) (a2 + b2)/2 2) (a2 – b2 + 2)/2 3) (a2 + b2 – 2)/2 4) None of these... View Article
