Page 181 - Science Class 07

Model Test Paper-1

(Based on Chapters-1 to 9)

A. Tick (3) the correct op on.
1. Which of the following is a saprophyte?

(a) Mushroom (b) Yeast
(c) Nitrogen (d) Cuscata
2. Omnivores eat:

(a) plants (b) flesh of animals
(c) both (a) & (b) (d) none of these

3. Which country first developed the technique of making tex le out of silk?
(a) India (b) England
(c) China (d) France

4. Who discovered that heat could be transformed into mo on?
(a) James Wa (b) Issac Newton

(c) Jacques Charles (d) James Presco Joule
5. Sun rays heat up the earth’s surface through the process of:
(a) conduc on (b) radia on

(c) convec on (d) none of these
6. Which of the following is not a weak acid?

(a) Tartaric acid (b) Nitric acid
(c) Ace c acid (d) Oxalic Acid
7. Which of the following is not a weak base?

(a) NH OH (b) NaOH
4
(c) Mg(OH) (d) Ca(OH)
2 2
8. How many elements have been found so far?
(a) 96 (b) 106
(c) 115 (d) 206

9. Which of the following is a metalloid?
(a) Phosphorous (b) Silver

(c) Carbon (d) Sillicon
10. Respiratory exchanges occur in:
(a) trachea (b) alveoli

(c) bronchi (d) lungs

Science-7 181