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Q:

Which of the following group is NOT Dobereiner Triads?

 

A) Li, Na, K B) N, P Au
C) Cl, Br, I D) Ca, Sr, Ba
 
Answer & Explanation Answer: B) N, P Au

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Q:

If the first and third members of a Dobereiner triad are Phosphorous and Antimony, the second member of this triad is

A) Calcium B) Iodine
C) Arsenic D) Sulphur
 
Answer & Explanation Answer: C) Arsenic

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Q:

Which of the following is the third member of the Dobereiner triad, that also features Lithium and Sodium?

 

A) Potassium B) Boron
C) Barium D) Hydrogen
 
Answer & Explanation Answer: A) Potassium

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Q:

Which one of the following triad represents Dobereiner's Triad?

A) Li, Na, K B) Na, Sr, Br
C) Li, K, Na D) Li, Ca, C1
 
Answer & Explanation Answer: A) Li, Na, K

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Q:

Which of the statements given below are correct?

1. The author of the novel 'Gilead' is Don Winslow.
2. The author of the novel 'Wolf Hall' is Stephen Dobyns.
3. The author of the novel 'To Kill a Mockingbird' is Harper Lee.

A) 1 and 2 B) 2 and 3
C) 1 and 3 D) 1, 2 and 3
 
Answer & Explanation Answer: A) 1 and 2

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Q:

Elements A, B and C occur as Dobereiners triads. If the atomic mass of A is 7 and that of C is 39, what will be the atomic mass of B?

A) 20 B) 40
C) 23 D) 12
 
Answer & Explanation Answer: A) 20

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Q:

Great Mosque of Cordoba is located in which country?

A) Colombia B) Spain
C) Argentina D) Chile
 
Answer & Explanation Answer: B) Spain

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Q:

Write an SQL Query find number of employees according to gender whose DOB is between 01/01/1960 to 31/12/1975.

Answer

SELECT COUNT(*), sex from Employees  WHERE  DOB BETWEEN ‘01/01/1960 ' AND ‘31/12/1975’  GROUP BY sex;

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Subject: SQL