19. A fuel used in spacecraft
a. Diesel b. Hydrogen c. Petrol d. Coal
20. Ignition temperature of red phosphorous is
a. 65 °C b. 45 °C c. 35 °C d. 260 °C
21. The protein synthesizing organelles in the cell are
a. Mitochondria b. Golgi bodies c. Vacuole d. Ribosomes
22. Which of the following is the powerhouse of a cell?
a. Mitochondria b. Golgi bodies c. Vacuole d. Ribosomes
23. The organelle which helps in manufacture of food in plants is
a. Chloroplast b. Golgi bodies c. Vacuole d. Ribosomes
24. Which of the following structures is not present in all cells?
a. Cell membrane b. Cytoplasm c. Nucleus d. Plastids
25. Cells without a nucleus are called
a. Unicellular b. Multicellular c. Enucleated cells d. Eukaryotes
Q-2 Answer in one word (5×1=5)
1. Write the SI unit of pressure.
2. What are disease causing microorganisms called?
3. Which is the least hot region of the candle flame?
4. Name the metal which is liquid at room temperature.
5. Who discovered the cell?
Answers
Answered by
2
Answer:
19-B
20-option is wrong
but correct answer is 240°C.
21-B
22-A
23-A
24-A
25-C
1.S.I unit of pressure is pascal.
2.pathogens
3. outermost zone
4. Mercury
5.Robert hook discovered a dead cell
and A.V Lavoisier found a living cell in the pond.
.
hope it will be helpful.
Answered by
2
Answer:
thanks for free points
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