Test Details

Chapter 3 (Chemistry)

Oct 31, 6:25 PM

25 minutes

Sep 03, 7:00 PM

29.0 marks

MCQ

20 questions

priyanka Chaudhary

teacher

Class Details

Physics

Maths

Class 11

Physics

Maths

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Question Text

Question 1 :
The attempt for classifying elements by plotting the atomic masses of elements against the atomic volumes was made by:

Question 3 :
Which among the following is not an anomalous pair in Mendeleev's periodic table?

Question 5 :
The element placed with cerium, in the table formed by Newlands' was :

Question 6 :
The law of triad is applicable to a group of :

Question 9 :
Mendeleev used a Sanskrit numeral before the names of the predicted elements. What was the term used for it?

Question 10 :
Cl, Br, I  follows Dobereiner's triads, the atomic masses of Cl and I are 35.5 and 127 respectively. The atomic mass of Br is :

Question 11 :
The number of elements known in Mendeleev's presented periodic table is:

Question 12 :
If the two members of a Dobereiner's triad are chlorine and iodine, then the third member of this triad is :

Question 15 :
Statement: In Dobernier classification of elements, the atomic weight of the middle element is equal to the average of the extreme elements of a triad. State whether the given statement is true or false.

Question 16 :
It was assumed by newlands that only 63 elements existed in nature and no more elements would be discovered in the future.

Question 17 :
In a triad of $$A, B, C$$ elements if the atomic masses of $$A$$ and $$C$$ respectively are $$100$$ and $$200$$, then the atomic mass of $$B$$ is:

Question 19 :
Assertion: According to Mendeleev, the properties of elements are a periodic function of their atomic weights. Reason: Mendeleev left the gap under aluminium and a gap under silicon, and called these elements Eka-Aluminium and Eka-Silicon.

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