The reason for colour changes in tomatoes (Green – White – Yellow – Red) is
A) Endoplasmic reticulum
B) Plastids
C) Nucleolus
D) Cell membrane
1 Answers
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There are two boxes, red and white in colour. The ratio of the number of chocolates in the white box to the number of biscuits in the red box is ` 3 :
Correct Answer - ` 18 : 13`
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An urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. Find the probability that the ball drawn is (i) red (ii) white (iii) red
Correct Answer - `(i) 9/20 (ii) 7/20 (iii) 4/5 (iv) 11/20 (v) 13/20`
2 Answers 1 views
The refractive indices of the material of the prism for red and yellow colour are 1.620 and 1.635 respectively.
Given: nR = 1.620, nY = 1.635, A = 8° To find: i. Angular dispersion (δV – δR) ii. Dispersive power (ω) Formulae: i. δv – δr = A(nV – nR) ii. ω = \(\frac{n_V-n_R}{n_Y-1}\) Calculation: Since, nY = \(\frac{n_V+n_R}{2}\) ∴ nV = 2nY – nR nV = 2 × 1.635...
2 Answers 2 views
A given carbon resistor has the following colour code of the various strips: Orange, red, yellow and gold. The value of resistance in ohm is
Correct option is: (A) 32 × 104 ± 5%
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Match the following. Oxide – Colour A) MgO a) White B) PbO b) Yellow
A) 1 – a, 2 – b, 3 – c, 4 – d
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A substance is in light yellow colour. If we put it in sunlight, it changes into grey colour. What is the substance ?
C) Silver bromide
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Observe the a, b statements. a : Yellow colour YY is pure breed. b : Green colour yy is also pure breed.
(A) Both a and b are true
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If Yy represents yellow colour, then which colour will be dominant ?
Answer is (C) Yellow
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Reason for dying of red colour beetles and increase of green coloured beetles ……….
(C) Variation in the colour
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The default colour of Vlink is _____ (a) Blue (b) Green (c) Red (d) Yellow
Correct answer is (c) Red
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