Science Chemistry MCQ-204

General Science-Chemistry Model Questions for SSC, CDS, JPSC, UPPSC, CivilsPrelims, RBI, NDA, UPSC Exams



Consider the following statements
1. Phosphorus exhibits oxidation states of 3 and
:2. Iron exhibits oxidation states of +2 and+3
Which of the statement(s) given above is/are correct?

 
 
 
 

A base is a substance which

 
 
 
 

Match Column I with Column II.
Column I – Column II
A. 10-7 1. pH value of neutral Solution
B. >7 2. pH value of acidic Solution
C. <7 3. pH value of alkaline solution
D. 7 4. In pure water hydrogen ion concentration
Codes
ABCD

 
 
 
 

Match Column I with Column II.
Column 1(pH value) Column II(Product)
A. 35 to 45 1. Milk
B. 6 2. Human blood
C. 5 3. Wine
D. 2.8 4. Sea water
Codes
ABCD

 
 
 
 

The pH of water at 25O C is When it is heated to 10OO C, the pH of water

 
 
 
 

The acid used in lead storage battery is

 
 
 
 

Which one of the following salts when dissolved in water makes the solution basic?

 
 
 
 

Which one of the following is correct? Due to continuous use of calcium superphosphate as fertilizer in soil, the pH of soil in creases or decreases

 
 
 
 

Solution in test tubes containing and aqueous Na OH can be differentiated with the help of ?

 
 
 
 

Which one among the following is not a property of salt?

 
 
 
 

Consider the following statements
1. Acids are sour in taste and change the colour of blue litmus to red.
2. Bases are bitter and change the colour of red litmus to blue.
3. Litmus is a natural indicator.
Which of the statements above are correct?

 
 
 
 

Study the following statements
1. Litmus solution is a purple dye which is extracted from lichen and is commonly used as an indicator.
2. Red cabbage leaves, turmeric, coloured petals of some flowers indicate the presence of acid or base in a solution.
3. Some substances whose odour changes in acidic or basic medium are called olfactory indicators.
Which of the statements given above are correct?

 
 
 
 

Consider the following statements
1.Limestone, chalk and marble are different forms of calcium carbonate.
2. When PH of rain water is less than 6, it is called acid rain.3. Human body works with in the PHrange of 0 to
Which of the statements given above are correct ?

 
 
 
 

Consider the following statements
Enzymes and proteins can be corelated with each other in the following ways,
1. All proteins are enzyme,
2. All enzymes are protein.
3. All enzymes are not protein.
4. All proteins are not enzyme

Which of the statements given above are correct?

 
 
 
 

The function of enzymes in the living system is to

 
 
 
 

Consider the following statements
1. The sweetest of all sugar is fructose.
2. The disaccharide present in milk is lactose.
3. Starch is a polymer of glucose.
Which of the statements above is/are correct?

 
 
 
 

Consider the following
1. Nucleic acids
2. Carbohydrates
3. Proteins
A virus is made up of which of the above?

 
 
 
 

Enzymes

 
 
 
 

What is the bond between two amino acids in a protein called?

 
 
 
 

Consider the following statements
1.On hydrolysis proteins give amino acids.
2.The coagulation of protein is called denaturing.
Which of the statements given above is/are true?

 
 
 
 

Which of the following has magnesium?

 
 
 
 

Between two strands in the double helical structure of DNA, there are

 
 
 
 

Which one of the following statements is not correct?

 
 
 
 

Which of the following is an example of conjugated protein?

 
 
 
 

Which one of the following statements regarding starch and cellulose is not correct?