MCQs Mock Test
1. Why are the alloys nichrome and managing commonly used as heating elements ?
(A) They have high melting points
(B) They have low thermal expansion
(C) They undergo oxidation at room temperature
(D) Both (A) and (b)
Ans ( d)
2. DNA carries the genetic information o fan organism Which is NOT found in DNA
(A) A deoxyribose sugar
(B) A nitrogenous base
(C) A phosphate group
(D) A sulphre group
Ans (d )
3. Identify an example of exo and endocrine gland
(A) Salivary
(B)Gastric
(C) Pancreas
(D) Adrenal
Ans (c )
4. What is the cooler of Zinc sup hate solution ?
(A) Green
(B) Yellow
(C) Blue
(D) Colorless
Ans (d )
5. What id the colour of clouds when the earth is not surrounded by layers of atmosphere
(A) white
(B) Red
(C) Blue
(D) Black
Ans (d )
6. What causes greatest blood pressure during ventricular systole ?
(A) Left atrium
(B) Left ventricle
(C)Right atrium
(D)Right ventricle
Ans (b )
7. What product is formed when ethanol is oxidized with alkaline potassium permanganate ?
(A) Ethanal
(B) Acetone
(C) Ethanoic acid
(D) Formic acid
Ans (c )
8. The wings of a housefly and the wings of a pigeon are examples of
(A) analogous organs .
(B) vestigial organs .
(C) respiratory organs .
(D) homologous organs .
Ans (a )
9. Which human activity is considered as the conservation of living things ?
(A) Felling trees
(B) Killing animals
(C) Replanting trees
(D) Digging drains
Ans (a )
10. What is the potential difference between the live wire and the neutral wire in domestic circuits ?
(A) 110 V
(B) 210V
(C) 220v
(D) 160v
Ans ( c)
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