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प्रश्न
Find the odd one out and give its explanation.
विकल्प
Voltmeter
Ammeter
Galvanometer
Electric motor
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उत्तर
Electric motor.
Explanation:
- A voltmeter, ammeter, and galvanometer are all measuring instruments used to detect or measure electrical quantities (potential difference, current, and the presence of small currents, respectively).
- An electric motor is an electromechanical device that converts electrical energy into mechanical energy, rather than functioning as a measuring instrument.
संबंधित प्रश्न
Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with an explanation.
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An element has its electron configuration as 2, 8, 2. Now answer the following question.
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Answer the following question in one sentence.
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Write the name.
The element having stable electron configuration from the third period.
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Write an explanation.
Group
Write a scientific reason.
In group 2, beryllium and calcium elements, calcium is more electropositive element than beryllium.
Complete the following chart.
| Shell | n | 2n2 | Electron holding capacity |
| K | 2 × 12 | 2 | |
| L | 2 | 8 | |
| 3 | 2 × 32 | 18 | |
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Find the period in which these elements can be placed.
4Be, 17Cl, 2He, 13Al
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- What is the atomic number of element A?
- Find the group to which this element belongs.
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- 2, 8, 2
- 2, 8, 7
- 2, 1
Observe the given chart and answer the questions given below.
| Element | A | B | C | D |
| Electronic configuration | 2, 1 | 2, 8 | 2, 8, 1 | 2, 8, 8 |
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- Which elements are in the 18th column?
- Which element is more reactive among A and C?
- Which of the following elements A or B will form compounds?
XY compound is formed by X (Atomic number 11) and Y (Atomic number 17), then answer the questions given below.
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- X and Y belongs to which of the following: metals, nonmetals or metalloids?
- From which block the elements X and Y are?
- Determine the electronic configuration and valency of these elements.
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