The interference pattern can be observed due to the superposition of the following waves:
A. \(y=a\sin\omega t\)
B. \(y=a\sin2\omega t\)
C. \(y=a\sin\left(\omega t-\phi\right)\)
D. \(y=a\sin3\omega t\)
Choose the correct answer from the options given below:
1.
B and C
2.
B and D
3.
A and C
4.
A and B
Subtopic: Superposition Principle |
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NEET - 2024
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Baeyer's reagent is:
1. Acidic potassium permanganate solution
2. Acidic potassium dichromate solution
3. Cold, dilute, aqueous solution of potassium permanganate
4. Hot, concentrated solution of potassium permanganate
1. Acidic potassium permanganate solution
2. Acidic potassium dichromate solution
3. Cold, dilute, aqueous solution of potassium permanganate
4. Hot, concentrated solution of potassium permanganate
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
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NEET - 2024
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Which of the following molecules has "NON ZERO" dipole moment value?
| 1. | \(\mathrm{CCl_4}\) | 2. | \(\mathrm{HI}\) |
| 3. | \(\mathrm{CO_2}\) | 4. | \(\mathrm{BF}_3\) |
Subtopic: Polarity |
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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
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Which indicator is used in the titration of sodium hydroxide against oxalic acid and what is the colour change at the end point?
1. Phenolphthalein, pink to yellow
2. Alkaline \(\mathrm{KMnO_4}\), colourless to pink
3. Phenolphthalein, colourless to pink
4. Methyl orange, yellow to pinkish red colour
1. Phenolphthalein, pink to yellow
2. Alkaline \(\mathrm{KMnO_4}\), colourless to pink
3. Phenolphthalein, colourless to pink
4. Methyl orange, yellow to pinkish red colour
Subtopic: The chemistry involved in the titrimetric exercises |
54%
NEET - 2024
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Match List-I with List-II:
Identify the correct answer from the option given below:
| List-I (Atom/Molecule) |
List-II (Property) |
||
| A. | Nitrogen | I. | Paramagnetic |
| B. | Fluorine molecule | II. | Most reactive element in group 18 |
| C. | Oxygen molecule | III. | Element with highest ionisation enthalpy in group 15 |
| D. | Xenon atom | IV. | Strongest oxidising agent |
| 1. | A- III, B-I, C-IV, D-II | 2. | A-I, B-IV, C-III, D-II |
| 3. | A-II, B-IV, C-I, D-II | 4. | A-III, B-IV, C-I, D-II |
Subtopic: Group 18 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |
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From the following select the one which is not an example of corrosion:
| 1. | Rusting of an iron object |
| 2. | Production of hydrogen by electrolysis of water |
| 3. | Tarnishing of silver |
| 4. | Development of green coating on copper and bronze ornaments |
Subtopic: Corrosion |
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Which of the following pairs of ions will have the same spin only magnetic moment values within the pair?
A. \(\mathrm{Zn ^{2+}, Ti ^{2+}}\)
B. \(\mathrm{Cr ^{2+}, Fe ^{2+}}\)
C. \(\mathrm{Ti ^{3+}, Cu ^{2+}}\)
D. \(\mathrm{V ^{2+}, Cu ^{+}}\)
Choose the correct answer from the options given below:
1. C and D only
2. A and D only
3. A and B only
4. B and C only
A. \(\mathrm{Zn ^{2+}, Ti ^{2+}}\)
B. \(\mathrm{Cr ^{2+}, Fe ^{2+}}\)
C. \(\mathrm{Ti ^{3+}, Cu ^{2+}}\)
D. \(\mathrm{V ^{2+}, Cu ^{+}}\)
Choose the correct answer from the options given below:
1. C and D only
2. A and D only
3. A and B only
4. B and C only
Subtopic: d-Block Elements- Properties & Uses |
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At a given temperature and pressure, the equilibrium constant value for the equilibria are given below:
\(3A_2+B_2\rightleftharpoons 2A_3B, K_1\\ A_3B \rightleftharpoons \frac 3{2}A_2+\frac 1{2}B_2, K_2 \)
The relation between \(K_1\) and \(K_2\) is:
1. \(K^2_1=2K_2\)
2. \(K_2= \frac { K_1 }{2}\)
3. \(K_1=\frac 1{\sqrt K_2}\)
4. \(K_2=\frac 1{\sqrt K_1}\)
\(3A_2+B_2\rightleftharpoons 2A_3B, K_1\\ A_3B \rightleftharpoons \frac 3{2}A_2+\frac 1{2}B_2, K_2 \)
The relation between \(K_1\) and \(K_2\) is:
1. \(K^2_1=2K_2\)
2. \(K_2= \frac { K_1 }{2}\)
3. \(K_1=\frac 1{\sqrt K_2}\)
4. \(K_2=\frac 1{\sqrt K_1}\)
Subtopic: Introduction To Equilibrium |
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If \(\phi\) is the work function of photosensitive material in \(\text{eV}\) and light of wavelength of numerical value \(\lambda=\frac{{hc}}{{e}}\) metre, is incident on it with energy above its threshold value at an instant then the maximum kinetic energy of the photo-electron ejected by it at that instant (Take \(h\)-Plank's constant, \(c\)-velocity of light in free space) is (in SI units):
| 1. | \({e}+2\phi \) | 2. | \(2{e}-\phi \) |
| 3. | \({e}-\phi \) | 4. | \({e}+\phi \) |
Subtopic: Einstein's Photoelectric Equation |
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