Chemistry and Biology Related questions

Chemistry and Biology questions and answers for kerala psc secretariat assistant, Company, Corporation Assistant , Librarian exam.

Chemistry

1. Aurite is the ore of:

Ans. Gold

2. DDT is the main name of a chemical that can be used as a/an:

Ans. Insecticide

3. Gobar gas contains mainly :

Ans. Methane

4. The Bright Yello colour of street light is due to:

Ans. Siodium

5. Dental gold is an alloy of gold with:

Ans. Silver and Copper

6. Which is known as the universal solvent?

Ans. Water

7. Styrene is made up of the elements:

Ans. Hydrogen and Carbon

8. A gas which is not present in normal samples of air is:

Ans. Chlorine

9. The first transuranic element synthesised was:

Ans. Neptunium

10. The metal contained in clay:

Ans. Aluminium

11. Which is the heaviest known metal?

Ans. Osmium

12. Phosphorus-32 is used in the treatment of:

Ans. Leukemia

13. The branch of Chemistry that deals with living system is known as:

Ans. Biological Chemistry

14. Stainless steel, apart from components of steel contains?

Ans. Chromium and Nickel

15. The Alkali metal used in photovoltaic cell is:

Ans. Caesium

16. Malachite is an ore of:

Ans. Copper

17. In refrigerators, the liquid used as refrigerant is:

Ans. Liquid Ammonia

18. Boric acid is a:

Ans. Mild anticeptic

Biology

1. In termites, the cellulose of wood is digested by:

Ans. Protozoans

2. A solution of chlorophyll pigments looks red in reflected light because of:

Ans. Fluorescence

3. The life span of human red blood corpuscles is:

Ans. 120 days

4. Deficiency diseases are due to deficiency of:

Ans. Vitamins

5. The sugar present in Milk is:

Ans. Lactose

6. The Hindustan antibiotics is situated at:

Ans. Pimpri

7. Venous blood is carried to the lungs for oxygenation by the:

Ans. Pulmonary arteries

8. Puncture of the thoracic wall but not of the lung itself will cause:

Ans. Collapse of the lung

9. Reflex action is controlled by:

Ans. The spinal chord

10. The pH of blood is in the range:

Ans. -7.3 to 7.5

11. Biopsy test is connected with the diagnosis of:

Ans. Cancer

12. Medulla oblongata is a part of human in:

Ans. Brain

13. Heart attack is due to:

Ans. Cholesterol

14. Kwashiorkor is a disease caused due to the deficiency of:

Ans. Proteins

15. The acid present in tamarind is:

Ans. Tartaric acid

16. The inner black surface of the Eye is called:

Ans. Retina

17. Enzyme present in the Saliva is:

Ans. Ptyalin

18. The Chemical name of ‘Vitamin E’ is:

Ans. Tocopherol