Chemistry - 01

Chemistry (Civil Service Examination), Questions and Answers, GK for UPSC, Bank PO & All Exams


1. Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because [1999]


2. Which one of the following elements is essential for the construction of nuclear reactors? [1998]


3. Which one of the following is not an essential micronutrient for plants? [1996]


4. Consider the following statements with reference to the periodic table of chemical elements: [2001]
1. Ionisation potential gradually decreases along a period
2. In a group of elements, electron affinity decreases as the atomic weight increases
3. In a given period, electronegativity decreases as the atomic number increases
Which of these statement (s) is/are correct?


5. Consider the following statements: [1998]
Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to
1. act as the reducing agent
2. remove silica associated with the iron ore
3. function as fuel; to supply heat
4. act as an oxidizing agent Of these statements



6. In an atom, the order of filling up of the orbitals is governed by [2001]


7. Which one of the following is NOT radioactive? [2001]


8. Match List I with List II and select the correct answer using the codes given below the lists: [2000]
List-I- List-II
A. German silver - 1. Tin
B. Solder - 2. Nickel
C. Bleaching powder - 3. Sodium
D. Hypo - 4. Chlorine Codes:


9. An aqueous solution of copper sulphate is acidic in nature because the salt undergoes [2001]


10. Assertion (A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group
Reason (R): In a group, the atomic radii generally increase from top to bottom. [2003]


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Benefits of Jalapeno

Minerals

Jalapeno peppers provide more than a kick of flavor to your nachos and tacos. These small, fiery green peppers provide multiple vitamins, minerals and antioxidants to support a healthy body. Jalapenos may also help you manage your weight. Choose fresh jalapenos and add them to mashed avocado, eggs, salsas, dips and meatloaf to provide extra nutrition and spice.

The subject misplaced in indirect questions

Don't Say:
The teacher asked me what games did I play?

Say:
The teacher asked me what games I played.

Note:
In indirect questions follow the usual order of word?: subject first and then verb.
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