Science
In the diagram given below, X and Y are the end colours of the spectrum of white light. The colour of 'Y' represents the
- Colour of the sky as seen from Earth during the day.
- Colour of the sky as seen from the moon.
- Colour used to paint the danger signals.
- Colour of sun at the time of noon.
Related Questions
For the diagram shown, according to the new cartesian sign convention the magnification of the image formed will have the following specifications :
- Sign — Positive, Value — Less than 1
- Sign — Positive, Value — More than 1
- Sign — Negative, Value — Less than 1
- Sign — Negative, Value — More than 1
A ray of light is incident as shown. If A, B and C are three different transparent media, then which among the following options is true for the given diagram?
- ∠ 1 > ∠ 4
- ∠ 1 < ∠ 2
- ∠ 3 = ∠ 2
- ∠ 3 > ∠ 4
Which one of the following reactions is categorized as a thermal decomposition reaction?
- 2H2O (l) ⟶ 2H2(g) + O2 (g)
- 2AgBr(s) ⟶ 2Ag(s) + Br2(g)
- 2AgCl(s) ⟶ 2Ag(s) + Cl2(g)
- CaCO3(s) ⟶ CaO(s) + CO2(g)
Consider the pH value of the following acidic samples :
S.
No.Sample pH Value 1. Lemon Juice 2.2 2. Gastric Juice 1.2 3. Vinegar 3.76 4. Dil. Acetic acid 3.0 The decreasing order of their H+ ion concentration is
- 3 > 4 > 1 > 2
- 2 > 1 > 3 > 4
- 2 > 1 > 4 > 3
- 3 > 4 > 2 > 1