periodic classification of elements class 10 mcq

All the inert gases are placed in 1. Zero group 2. First group 3. Second group 4. Third group

Based on the electronic configuration, the elements are classified into….. classes 1. Two 2. Three 3. Four 4. Five

Elements from atomic number 89 (Actinium) to 102 (Nobelium) are known as 1. Lanthanoids 2. Actinoids 3. Inertgases 4. Representative elements

Concept of actaves was proposed by 1. Mosley 2. Mendeleef 3. Newlands 4. Pettenkofer

Which of the following is not a triad 1. S, Se, Te 2. Fe, Co, Ni 3. Li, Na, k 4. Na, Mg, Al

Group of Li, Na, K are called 1. Metals 2. Alkaline earth metals 3. Inactive metals 4. Triad

Which of the following group of elements are triad 1. Na, Ne, k 2. Cl, Br, I 3. Li, Fe, Ni 4. C, N, O

In Doberiener traid the atomic weight of mid dle element is 1. The Sum of the atomic weights of first and third elements 2. The product of the atomic weights of First and Third elements 3. The ratio of the atomic weights of First and Third elements 4. The mean of the atomic weights of first and third elements

Dobereiner arranged elements as 1. groups 2. periods 3. triads 4. All the above

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periodic classification of elements class 10 mcq

Each period in the periodic table ends with an 1. Halogen 2. Chalkogen 3. Inert gas element 4. None of these

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All the inert gases are placed in 1. Zero group 2. First group 3. Second group 4. Third group

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Based on the electronic configuration, the elements are classified into….. classes 1. Two 2. Three 3. Four 4. Five

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Elements from atomic number 89 (Actinium) to 102 (Nobelium) are known as 1. Lanthanoids 2. Actinoids 3. Inertgases 4. Representative elements

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Concept of actaves was proposed by 1. Mosley 2. Mendeleef 3. Newlands 4. Pettenkofer

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Which of the following is not a triad 1. S, Se, Te 2. Fe, Co, Ni 3. Li, Na, k 4. Na, Mg, Al

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Group of Li, Na, K are called 1. Metals 2. Alkaline earth metals 3. Inactive metals 4. Triad

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Which of the following group of elements are triad 1. Na, Ne, k 2. Cl, Br, I 3. Li, Fe, Ni 4. C, N, O

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Dobereiner arranged elements as 1. groups 2. periods 3. triads 4. All the above

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