Archives

Is Gold A Pure Element

Gold is a pure element and is obtained in the pure form. Learn more about pure substances in detail @BYJU’S!... View Article

Is Alumina A Ceramic Material

Yes, alumina is a ceramic material. Learn more about aluminium oxide in detail @BYJU’S!... View Article

Does Capillary Action Affect Viscosity

Capillary action is responsible for raising the liquid in the capillary tube. Viscosity is the resistance to the flow of the fluid. Hence the... View Article

Why Do Magnets Not Stick To Stainless Steel

Some stainless steel materials are not magnetic, and hence magnets don't stick. When the amount of nickel in stainless steel is more it behaves... View Article

In Which Of The Following Solubility Of Agcl Will Be Minimum

0.01 M NaCl 0.01 M CaCl2 0.01 M Na2So4 H2O Answer: 2. 0.01 M CaCl2 Since CaCl has two moles of common ion (0.02M) compared with AgCl, it... View Article

Is Nacl An Acid Or Base

Ammonium chloride (NaCl) is acidic in nature. Learn about electrolytes in an engaging way @BYJU’S - The Learning App!!... View Article

Is Sodium Sulfide An Electrolyte

Sodium sulfide is a strong electrolyte. Learn about electrolytes in an engaging way @BYJU’S - The Learning App!!... View Article

How Does A Mosfet Act As An Amplifier

MOSFET has the capability to produce a large change in drain current as in JFET when there is a small change in gate voltage. Hence MOSFET... View Article

Is Rose Gold Real Gold

Yes, rose gold is real gold metal. It is composed of pure gold, copper and silver alloys. It contains 75% of gold metal. Know about other... View Article

Does Platinum Lose Its Shine

Yes, platinum loses its shine and dulls up faster than other precious metals.... View Article

Is Ammonia A Fertilizer

Ammonia is an essential vital nutrient for plants and is an ideal fertilizer. It is a rich source of nitrogen. Learn about the production of... View Article

What Do Hdac Inhibitors Do

HDAC inhibitors are chemical compounds that enhance the acetylation of lysine residues on histone proteins and other nonhistone proteins by... View Article

What Are 4 Types Of Radiation From The Sun

4 types of sun’s radiation include: Infrared rays, Visible rays Ultraviolet light radio waves Learn about UV light in a best and... View Article

The Value Of Cot 70 Plus 4 Cos 70 Is

1) 1/√3 2) √3 3) 2√3 4) 1/2 Answer: (2) √3 Solution: cot 70° + 4 cos 70° = (cos 70°/sin 70°) + 4 cos 70° = (cos 70° + 4 cos 70°... View Article

Tan Of Pi 4 1 2 Cos Inverse A B Plus Tan Pi 4

1) 2a/b 2) 2b/a 3) a/b 4) b/a Answer: (2) 2b/a Solution: Let (1/2) cos-1(a/b) = x cos-1(a/b) = 2x Therefore, cos 2x = a/b.....(i)... View Article

The Expression Sec 50 Plus Tan 50 Is Equal To

1) tan 20° + tan 50° 2) 2 tan 20° + tan 50° 3) tan 20° + 2 tan 50° 4) 2 tan 20° + 2 tan 50° Answer: (3) tan 20° + 2 tan 50°... View Article

If Cos P 1 7 And Cos Q 13 14 Where P And Q Both Are Acute Angles Then

1) 30° 2) 60° 3) 45° 4) 75° Answer: (2) 60° Solution: Given, cos P = 1/7 Using the identity sin2A + cos2A = 1, sin P = √(1 -... View Article

The Value Of Cos 2 Pi 12 Cos 2 Pi 4 Cos 2 5pi 12 Is

1) 3/2 2) 2/3 3) (3 + √3)/2 4) 2/(3 + √3) Answer: (1) 3/2 Solution: cos2(π/12) = [cos(π/2 - 5π/12)]2 = (sin 5π/12)2 cos2(π/12) +... View Article

If Sin Theta Sin 2theta Sin 3theta Sin Alpha And Cos Theta Cos 2theta Cos 3theta Cos Alpha Then Theta Is

1) α/2 2) α 3) 2α 4) α/6 Answer: (1) α/2 Solution: Given, sin θ + sin 2θ + sin 3θ = sin α (sin 3θ + sin θ) + sin 2θ = sin α 2... View Article

If Cos X Cos Y Cos Alpha 0 And Sin X Sin Y Sin Alpha 0 Then Cot X Y 2

1) sin α 2) cos α 3) cot α 4) sin(x + y)/2 Answer: (3) cot α Solution: Given, cos x + cos y + cos α = 0 cos x + cos y = -cos α 2... View Article

M	T	W	T	F	S	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30	31