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What is symbiosis? Explain with the help of an example

Symbiosis is defined as a relationship or interaction between two different organisms that share similar habitat. There are three types... View Article

Who are known as Indian Machiavelli and King Maker of Indian History?

Chanakya is called the Indian Machiavelli and Sayyid brothers were known as king makers in Indian History

Species found only in a particular area is known as ___________

Species found only in a particular area is known as endemic.

Glass is made of the mixture of (A) sand and silicates (B) quartz and sand (C) mica and quartz (D) mica and silicates

Glass is made of the mixture of sand and silicates. Hence, the correct option is (A)

What is rain water harvesting?

Rainwater harvesting is the simple process or technology used to conserve rainwater by collecting, storing, conveying and purifying of rainwater... View Article

Body A of mass 4m moving with speed u collides with another body B of mass 2m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is (a) 1/9(b) 8/9(c) 4/9(d) 5/9

Fractional loss of KE of colliding body, \(\begin{array}{l}\frac{\Delta KE}{KE}= \frac{4\times \left ( m_{1}m_{2} \right )}{\left ( m_{1}+m_{2} \right )^{2}}\end{array} \)... View Article

What is the value of ph for a neutral solution?

Solutions having the value of pH equal to 7 on pH scale are known as neutral solutions. Learn more: ph... View Article

Every rhombus is a rectangle. State with reasons whether the given statement is ‘true’ or ‘false’.

All the angles of a rectangle are congruent, while the opposite angles of a rhombus are congruent. Therefore, the statement... View Article

Gautama buddha gave his first sermon at (a) Vaishali (b) Kaushambi (c) Sarnath (d) Pawapuri

Gauthama Buddha gave his first sermon at ‘Sarnath’. Therefore, the correct option is (c)

Where was Gandhi Ashram located? (a) Dandi (b) Sabarmati (c) Allahabad (d) Nagpur

Gandhi Ashram was located in ‘Sabarmati’. Hence, the correct option is (b)

Economic growth depends on which of the following? (a) Size of the population of the country (b) Territory or area of the country (c) Global scenario (d) Co-operation among various nations

Economic growth depends on co-operation among various nations. Hence, the correct option is (d)

Factorise 27x³+ y³+ z³-9 xyz

Given 27x3+ y3+ z3– 9xyz This can be written as, = (3x)3 + (y)3 + (z)3 – 9xyz = (3x)3... View Article

Fill in the blank with appropriate word: Alcohol consumption mainly affects _______ system

Alcohol consumption mainly affects the nervous system.

A uniform metal rod is used as a bar pendulum. If the room temperature rises by 10⁰C, and the coefficient of linear expansion of the metal of the rod is 2 x 10^{-6,/sup> per ⁰C, the period of the pendulum will have percentage increase of (A) -2 x 10^-3(B) -1 x 10^-3(C) 2 x 10^-3(D) 1 x 10^-3}

The fractional increment in time with temperature change \(\begin{array}{l}\frac{\Delta t}{t}=\frac{1}{2}\alpha \Delta T\end{array} \)… (1) where, Δt/t is fractional increment α... View Article

The following velocity time graph shows the motion of a cyclist. Find (i) its acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 15 seconds

(i) As velocity is constant, acceleration ia 0 m/s2 (ii) Here velocity is constant Hence, v = 20m/s (iii) s... View Article

Plotter accuracy is measured in terms of repeatability and (A) Buffer size (B) Resolution (C) Vertical dimension (D) Intelligence (E) None of the above

Plotter accuracy is measured in terms of repeatability and ‘resolution’. Hence, the correct option is (B)

When the guard cells swell due to the entry of water the stomata gets __________ due to the osmotic potential (A) Closed(B) Flacid(C) Open(D) Rigid

Answer: (C) Open Due to the absorption of water, the guard cells swell, which results in the opening of stomatal... View Article

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