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7×2-25x+12. Factorise by splitting of middle term.

7x2-25x+12 Splitting the middle term, we get; = 7x2 - 4x - 21x + 12 = x(7x - 4) - 3(7x - 4) = (7x-4) (x-3) Therefore, the factors... View Article

Mushrooms belong to.

Mushrooms belong to kingdom of fungi. It is a type of fungus. The common mushroom you eat is also fungi. It is a form of basidiomycetes.... View Article

Fill in the blanks. A. Fossil fuels are. B Process of separation of different constituents from petroleum is __.

Fossil fuels are coal, petroleum and natural gas. Process of separation of different constituents from petroleum is called Refining.... View Article

Find the value:|4-9|

∣4−9∣=∣−5∣=5... View Article

What is scientific name of pea-plant?

The scientific name of pea-plant Pisum sativum... View Article

A piezometer is used to measure the pressure of:

A piezometer is used to measure the pressure of liquid pressure, i.e., increase in the pressure when there is an increase in the depth of the liquid.... View Article

Places A and B are 100km apart on a highway. one car starts from A and another from B at the same time. If the car travels in the same direction at different speeds, they meet in 5hrs. If they travel towards each other they meet in one hr. What is the difference of speeds in Km/hr of the two cars?

Let the speed of car at point A = x kmph and the speed of car at point B = y kmph The relative speed of car travelling in the same direction =... View Article

12-x/5=x. Solve this equation

12 - x/5 = x Bringing the like terms one side of the equation, we get; 12 = x + x/5 12 = 6x/5 or 6x = 12 × 5 x = 60/6 = 10... View Article

n/2 – 3n/4 + 5n/6 =21

n/2 - 3n/4 + 5n/6 =21 LCM of 2, 4 and 6 = 12 7n/12 = 21 n = (21x12)/7 n = 3 x 12 n = 36... View Article

What is the verb form of the word life?

The verb form of the word life is 'live'. For example: We live in a society... View Article

Name The Largest Salt Water Lake In India.

The largest salt water lake in India is Chilika Lake.... View Article

2sin45 cos45=1, how?

2 sin45 × cos 45 sin 45 = 1/√2 and cos 45 = 1/√2 Therefore, = 2 × 1/√2 × 1/√2 = 2... View Article

Solve (6x+1)/3 +1=(x-3)/6

(6x+1)/3 +1=(x-3)/6 Rationalising the denominator on LHS. (6x+1)/3 +3/3 = (x-3)/6 6x + 1 + 3 = (x - 3)/2 2(6x + 4) = x - 3 12x + 8 =... View Article

The elements of group 1 are called alkali metals because: (A) heir oxides form acidic solutions on treating with water (B) Their peroxides form alkalies solution on treating with water (C) Their oxides and hydroxides form alkalies solutions on treating with water (D) Their hydroxides form acidic solution on treating with water

Answer: (C) Their oxides and hydroxides form alkalies solutions on treating with water... View Article

Wheat requires annual rainfall between: (a) 50 and 75 cm (b) about 200 cm (c) 200 and 300 cm (d) less than 20 cm

(a) 50 and 75 cm Wheat requires annual rainfall between 50 and 75 cm... View Article

The magnification produced by a concave mirror: (A) is always more than one (B) is always less than one (C) is always equal to one (D) may be less than, equal to or greater than one

Answer: (D) may be less than, equal to or greater than one... View Article

What is the abstract noun of hero?

The abstract noun of hero is heroism... View Article

Equimolar solutions in the same solvent have: (A) Same freezing point but different boiling point (B) Same boiling point but different freezing point (C) Different boiling and different freezing point (D) Same boiling and same freezing points

Answer: (D) Same boiling and same freezing points Reason: Colligative Property is directly proportional to Number of moles of solute... View Article

Management is intangible. Comment

Management is intangible. It is an unseen force. But we can feel management through functions of organisation such as orderliness, discipline,... View Article

An ideal spring with spring constant k is hung from the ceiling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is: (A) 4Mg/k (B) 2Mg/k (C) Mg/k (D) Mg/2k

Answer: (B) 2Mg/k Explanation: By potential energy, we know; P.E. = 1/2 kx2 As per given, P.E. = Mg x 1/2 kx2 = Mg x or x = 2Mg/k... View Article

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