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Draw a circle with diameter 6 cm. (i) 6 cm (ii) 8.4 cm. In each case measure the length of the radius of the circle drawn

(i) AB is the diameter of the circle AB = 6 cm and OA is the radius of the circle The radius of the circle is, (1/2) x 6 = 3 cm Hence, OA... View Article

The HCF of 455 and 42 using Euclid algorithm is (A) 7 (B) 6 (C) 5 (D) 4

Euclid's division lemma states that, Any positive real number a can be represented as a = bq + r where b is greater than 0 and is called the... View Article

Which of the following is the heaviest metal? (A) Silver (B) Copper (C) Gold (D) Lead

Gold is the heavy metal. Hence, the correct option is (C)... View Article

In a parallelogram ABCD, E and F are the mid-points of sides AB and CD respectively. Show that the line segments AF and EC trisect the diagonal BD.

Given: ABCD is a parallelogram. E and F are the mid-points of sides AB and CD respectively. To prove: AF and EC trisect the diagonal BD ABCD... View Article

The part of the electromagnetic spectrum which is suitable for radar systems used in aircraft navigation: (A) X – Rays (B) Gamma Rays (C) Microwaves or short radio waves (D) Ultraviolet

Microwaves and short radio waves X-rays, gamma rays and ultraviolet rays have larger wavelengths and thus are not suitable for propagation... View Article

What happens when ethanol is oxidised with chromic anhydride in glacial ethanoic acid?

When ethanol is treated with chromic anhydrous in the presence of glacial ethanoic acid, the formation of ethanal takes place which is also known... View Article

Aquatic plants use CO2 dissolved in water for (A) breakdown of toxic materials (B) respiration (C) excretion (D) photosynthesis

Photosynthesis Carbon Dioxide also known as CO2 is present in water as a dissolved gas. CO2 can dissolve in water 200 times more easily than... View Article

Which of the following reduces Tollen’s reagent? (A) Cane sugar (B) Starch (C) Glucose (D) All of these

Glucose reduces Tollen's reagent. Hence, the correct option is (C)... View Article

AB and CD are two common tangents to circles which touch each other at C. If D lies on AB such that CD = 4 cm, then AB is equal to (A) 4 cm (B) 6 cm (C) 8 cm (D) 12 cm

Given CD = 4 cm We know that tangent drawn from an exterior point are equal Hence, From the figure, CD = AD = 4 cm CD = BD = 4 cm Now,... View Article

Prove that any rectangle is a cyclic quadrilateral

Consider ABCD is a rectangle Hence, ∠A = ∠B = ∠C = ∠D = 900 [Each angle of a rectangle is 900] ⇒ ∠A + ∠C = 1800 and... View Article

Which of the above is a pair of geometrical isomers? (A) I and II (B) I and III (C) II and IV (D) III and IV

II and IV Geometrical isomerism is a type of stereoisomerism having the same molecular formula and same structure but differ in the relative... View Article

Hypnotoxin is produced by (A) Sponges (B) Bath sponge (C) Nematocysts (D) Leucosolenia

Hypnotoxin is produced by nematocysts. Therefore, the correct option is (C)... View Article

The capital of british india was transferred from calcutta to Delhi in the year _________ (A) 1911 (B) 1912 (C) 1920 (D) 1925

The capital of british india was transferred from calcutta to Delhi in the year 1911. Hence, the correct option is (A)... View Article

All financial institutions can also be termed as banking institutions (A) True (B) False

False A financial institution can be a banking institutions only when it performs the functions of accepting deposits and advancing loans.... View Article

Which one of the following is an example of ex situ conservation? (A) Wild life sanctuary (B) Seed bank (C) Sacred groves (D) National park

Seed bank It is the process of conserving all the living species in the artificial habitats that imitate their natural habitats. Ex-situ... View Article

An example for symbiotic bacteria is (A) Erwinia amylovora (B) Rhizobium leguminosarum (C) Xanthomonas campestris (D) Agrobacterium tumefaciens

Rhizobium leguminosarum Symbiotic bacteria are bacteria which live in a symbiotic relationship with other organisms. It is a form in which both... View Article

Is 128 a perfect cube. Find its cube root

To know whether the number is perfect cube or not, we have to use prime factorisation method A method in which we write the original number as a... View Article

Dividend payout ratio is equal to ___________ (A) the dividend yield plus the capital gains yield (B) dividends per share divided by earnings per share (C) dividends per share divided by per value per share (D) dividends per share divided by current price per share

dividends per share divided by earnings per share Dividend payout ratio calculates the amount paid to shareholders as dividends in relation to... View Article

The S.I. unit of compressibility is? (A) m^2/N (B) Nm^2 (C) N/m^2 (D) kg/m^3

m2/N Usually, when we are talking about compressibility we can say that it is the inverse or reciprocal of the bulk modulus of elasticity. So if... View Article

The solution of (3x – 1)/5 – (1 + x)/2 = 3 – (x – 1)/2 is (A) 5 (B) -7 (C) 7 (D) -5

Given (3x - 1)/5 - (1 + x)/2 = 3 - (x - 1)/2 (3x - 1)/5 - (1 + x)/2 + (x - 1)/2 = 3 On taking LCM, we get, (6x - 2 - 5 - 5x + 5x - 5)/10 = 3... View Article

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