Carbon dioxide ______.
Anonymous Quiz
37%
Turns lime water milky
6%
Is odourless
10%
Is colourless
46%
All the three A B and C are correct
Which of the following are energy foods?
Anonymous Quiz
61%
Carbohydrates and fats
19%
Proteins and mineral salts
18%
Vitamins and minerals
3%
Water and roughage
The site of photosynthesis in the cells of a leaf is
Anonymous Quiz
70%
chloroplast
14%
mitochondria
13%
cytoplasm
3%
protoplasm
The number of pairs of sex chromosomes in the zygote of a human being is
Anonymous Quiz
62%
2
10%
3
22%
1
6%
4
The most abundant metal in the earth's crust is
Anonymous Quiz
46%
Iron
36%
Aluminium
9%
Calcium
9%
Sodium
The poorest conductor of heat among metals is
Anonymous Quiz
33%
Lead
37%
Mercury
17%
Calcium
13%
Sodium
In the Space Station the value of 'g' is only ______less than its value on the surface of Earth.
Anonymous Quiz
61%
10%
23%
11%
12%
12%
3%
13%
________ Predicted the existence of gravitational waves in 1916.
Anonymous Quiz
52%
Newton
18%
Einstein
18%
Galileo
12%
Kepler
The number of electrons in the outermost shell of alkali metals is _________.
Anonymous Quiz
56%
1
23%
2
11%
3
10%
7
When sodium hydroxide reacts with sulphuric acid _________.
Anonymous Quiz
41%
Hydrogen gas is liberated.
15%
Sodium bisulphate if formed.
18%
Sodium sulphate is formed.
27%
Sodium sulphate and water are formed.
The law of octaves was given by ______.
Anonymous Quiz
14%
Dobereiner
66%
Newlands
16%
Mendeleev
4%
Mosley
_______ is used in baloons and in scuba diving.
Anonymous Quiz
54%
Helium
17%
Oxygen
24%
Nitrogen
5%
Ozone
Noble gases belongs to group _____ in the modern periodic table.
Anonymous Quiz
15%
15
14%
16
18%
17
54%
18
Halogens belongs to group ______ in the modern periodic table.
Anonymous Quiz
12%
15
16%
16
55%
17
17%
18
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