DRONA COACHING CENTRE NARNAUL
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The organism containing only a single cell is called
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7%
a) organelle
12%
(b) multicellular organism
79%
c) unicellular organism
2%
d) No one
🔸The coloured organelles which are found in plants only are
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58%
(a) chlorophyll
29%
(b) plastids
11%
(c) vacuoles
2%
(d) WBC
A group of similar cells combine to form
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77%
(a) tissue
11%
(b) organ
9%
(c) organisms
3%
(d) organelles
A group of similar cells combine to form
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80%
(a) tissue
11%
(b) organ
6%
(c) organisms
3%
(d) organelles
The liquid material in the nucleus is
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(a) chromosomes
7%
(b) bacteria
68%
(c) nucleoplasm
12%
d) nucleolus
Which one of the following disease is not caused by bacteria?
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13%
(a) Typhoid
41%
(b) Malaria
32%
(c) Tuberculosis
13%
(d) No one
🔹Among the following substances the lowest vapour pressure is exerted by
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20%
(a) water
26%
(b) alcohol
22%
(c) ether
31%
(d) mercury
🌀The atmospheric pollution is generally measured in the units of
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(a) mass percentage
68%
(b) ppm
15%
(c) volume fraction
4%
(d) No one
Which one of the following is non-crystalline or amorphous?
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(a) Diamond
33%
(b) Graphite
35%
(c) Glass
16%
(d) Common Salt
Which of the following will have metal deficiency defect?
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30%
(a) NaCl
37%
(b) FeO
20%
(c) KCl
13%
(d) ZnO
🔺The oxide of nitrogen which acts as a catalyst in lead chamber process is
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19%
(a) NO
44%
(b) NO2
31%
(c) N2O4
7%
(d) H2O5
📶The numerical ratio of displacement to distance for a moving object is
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(a) always less than 1
29%
(b) always equal to 1
22%
(c) always more than 1
25%
(d) equal or less than 1
🔽If the displacement of an object is proportional to square of time, then the object moves with
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20%
(a) uniform velocity
44%
(b) uniform acceleration
30%
(c) increasing acceleration
6%
(d) decreasing acceleration
particle is moving in a circular path of radius r. The displacement after half a circle would be:
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(a) Zero
40%
(b) πr
30%
(c) 2r
11%
(d) 2πr
Which of the following can be made into crystal?
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21%
(a) A bacterium
20%
(b) An Amoeba
47%
(c) A virus
12%
(d) A sperm
Chromosomes are made up of
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19%
(a) DNA
12%
(b) Protein
67%
(c) DNA and protein
2%
(d) RNA
🔸The only cell organelle seen in prokaryotic cell is
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17%
(a) mitochondria
49%
(b) ribosomes
22%
(c) plastids
11%
(d) lysosomes