Balance the equation:- Mg3N2 +H20———>Mg(oH)2+NH3
The balanced equation is: Mg3N2 + 6H2O → 3Mg(OH)2 + 2NH3
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Trypanosoma, leishmania, and plasmodium are the examples of?
Trypanosoma, leishmania, and plasmodium are the examples of protozoa.
Deployment pipeline enables collaboration. a. True b. False
It is true that the deployment pipeline enbales collaboration.
Who built the cooperative called new harmony
Robert Owen built the cooperative called the new harmony.
Differentiate between mass and inertia
The difference between mass and inertia is that mass is the quantity of the matter in a body irrespective of... View Article
Give the clipped words for a) laboratory b) cafeteria
The chipped word for laboratory is lab. The chipped word for cafeteria is cafe.
Prove that sinA-cosA+1÷sinA+cosA-1 = 1÷secA-tanA
To prove: \(\begin{array}{l}\frac{sinA-cosA+1}{sinA+cosA-1}=\frac{1}{secA-tanA}\end{array} \) Solution: \(\begin{array}{l}LHS=\frac{sinA-cosA+1}{sinA+cosA-1}\end{array} \) Divinding by cosA \(\begin{array}{l}\frac{tanA+secA-1}{tanA-secA+1}\end{array} \) =\(\begin{array}{l}\frac{(secA+tanA)-(sec^2A-tan^2A)}{tanA-secA+1}\end{array} \) =\(\begin{array}{l}\frac{(secA+tanA)-(secA-tanA)(secA+tanA)}{tanA-secA+1}\end{array} \) =\(\begin{array}{l}\frac{(secA+tanA)(1-secA+tanA)}{1-secA+tanA}\end{array} \) =secA+tanA =\(\begin{array}{l}\frac{1}{secA-tanA}\end{array}... View Article
Write in Roman Numerals (a) 69 (b) 98.
The following are the Roman numbers of 69 and 98: 69 = 60+9 = (50+10)+9 = LX+IX = LXIX 98... View Article
The sides of a triangle are 3 cm, 4 cm and 5 cm. Its area is (1) 12cm2 (2) 15cm2 (3) 20cm2 (4) 6cm2
Answer: (4) 6 cm2 The sides of a triangle are 3 cm, 4 cm and 5 cm. The lengths of the sides... View Article
The sides of a triangle are 3cm, 5cm, and 4cm: Find its area.
The lengths of the sides are a = 3 cm b = 5 cm c = 4 cm \(\begin{array}{l}s=\frac{a+b+2}{2}= \frac{3+4+5}{2}... View Article
If one chamber has a Ψw of – 2000 kPa, and the other – 1000 kPa, which is the chamber that has the higher Ψ ?
Chamber A with Ψw of – 1000 kPa has a higher water potential (Ψ) than the other with Ψw of... View Article
An astronaut is looking down on earth’s surface from a space shuttle an altitude of 400 km Assuming that the astronaut’s pupil diameter is 5 mm and the wavelength of visible light is 500 nm, the astronaut will be able to resolve linear objects of the size of about :
\(\begin{array}{l}Resolving power = 1.22*\frac{\lambda D}{d}\end{array} \) d is the aperture of the instruments D is the distance of satellite from... View Article
Calculate the amount of charge flowing in 2 min in a wire of resistance 10Ω when a potential difference of 20V is applied between its ends.
Given, t = 2 min = 120 second R=10Ω, V = 20 volt We know that, I=V/R = 20/10 =... View Article
4g argon (Atomic mass =40) in a bulb at a temperature of TK has a pressure P atm. When the bulb was placed in a hot bath at a temperature of 50 degrees C more than the first one, 0.8g of gas had to be removed to get the original pressure. T is equal to :
PV=nRT Consider argon P×V=4/40×R×T We know that molecular weight of Ar=40, On heating, P×V= (3.2/40)*R*(T+50) 4T=3.2T+160 T=160/0.8 =200K
The angular frequency of motion whose equation is 4d2y/dt2+9y=0 is (y=displacement and t=time)
Answer: \(\begin{array}{l}4\frac{d^{2}y}{dt^{2}}+9y=0\end{array} \) Dividing the above equation by 4, we get \(\begin{array}{l}\frac{d^{2}y}{dt^{2}}+\frac{9}{4}y=0\end{array} \) comparing the above equation with the general... View Article
A parallel beam of monochromatic light of wavelength 5000 A is incident on a single narrow slit of width 0.001 mm. The light is focussed by a convex lens on a screen placed on a focal plane. The first minimum will be formed for the angle of diffraction equal to a) 50 degrees b) 15 degrees c) 20 degrees d) 30 degrees
Option d) 30 degrees \(\begin{array}{l}dsin\Theta =m\lambda\end{array} \) \(\begin{array}{l}\Theta = sin^{-1}(\frac{m\lambda }{d})\end{array} \) \(\begin{array}{l}sin^{-1}=\frac{1*5000*10^{-10}}{0.001*10^{-3}}\end{array} \) \(\begin{array}{l}\theta =30^{0}\end{array} \)
An infinite G.P has first term ‘x’ and sum ‘5’ , then x belongs to :
a) 010
c) ∣x∣<10
d) −10
Option a) 0<x<10The sum of infinite terms of GP is given by\(\begin{array}{l}S_{\infty}=\frac{a}{1-r};r< 1\end{array} \)\(\begin{array}{l}S_{\infty}=\infty;\left |r \right |\geq 1\end{array} \)\(\begin{array}{l}S_{\infty}=\frac{x}{1-r}=5\end{array} \)\(\begin{array}{l}since... View Article
Why do we need to separate different components of a mixture? Give two examples.
When two or more substances are mixed together, it is known as a mixture. To remove unuseful or harmful components... View Article
When two numbers are added then the number you get is called a) Sum b) Difference c) Addend d) None of the option
Option a) Sum. The sum is obtained when two numbers are added.
The _____ are an example of Buddhist literature. a) Arthashastra b) Tripitikas c) Kavirajamarga d) Mudrarakshasa
Option b) Tripitikas. Tripitikas refers to the earliest collection of Buddhist writings.
