Olympiad Test: High Order Thinking Skills (HOTs)- 2

Question 1

Refer to the given figures P, Q, R and S and select the correct statement regarding them.

Accepted Answer

In Q, cilia help in locomotion and catching prey whereas in P pseudopodia help in catching prey.

Answer

Q and R show holozoic heterotrophic nutrition whereas P shows mixotrophic nutrition.

Answer

S is helpful in crop growth and increases capacity of soil to hold water.

Answer

P and S use pseudopodia for feeding and locomotion.

Question 2

The guven graph population index of three animal species in the world over a period of last 30 years. Select the correct option regarding P, Q and R.

Accepted Answer

P-Golden eagle, Q-Asiatic lion, R-Passenger pigeon

Answer

P-Sea mink, Q-Greater one horned rhino, R-Asiatic elephant

Answer

P-Cheetah, Q-Giant panda, R-Great Indian bustard

Answer

P-Dodo, Q-Golden Langur, R-Giantic panda

Question 3

Select the correct match.
(i) Mohair – Angora rabbit
(ii) Merino – Vicuna
(iii) Angora wool – Angora goat
(iv) Cashmere – Kashmiri goat

Accepted Answer

(iv) only

Answer

(i) and (ii) only

Answer

(ii) and (iii) only

Answer

(iii) and (iv) only

Question 4

A block of mass 10 kg is suspended 10 kg through two light spring balances as
shown in figure.

Choose the correct option.
(Neglect the mass of a spring balance)

Accepted Answer

Both the scales will read 10 kg.

Answer

Both the scales will read 5 kg.

Answer

The upper scale will read 10 kg and the lower scale zero.

Answer

The reading can be anything but their sum will be 10 kg

Question 5

A few substances are grouped randomly as follows :
Group I : Nitric acid, sulphuric acid, citric acid
Group II : Ammonia, baking soda, caustic soda
Group III : Oxalic acid, tartaric acid, carbonic acid
The odd ones in groups I, II and III are respectively

Accepted Answer

Citric acid, caustic soda and carbonic acid

Answer

Sulphuric acid, ammonia and carbonic acid

Answer

Nitric acid, caustic soda and tartaric acid

Answer

Sulphuric acid, baking soda and oxalic acid

Question 6

A factory was built near a river. Factory waste containing mercury was discharged into the river. The given graph shows the amount of mercury at four different locations in the river.

Select the option that correctly identifies the area with least (P) and most (Q) number of fish.

Accepted Answer

P Q X W

Answer

P Q X Y

Answer

P Q Y Z

Answer

P Q Y W

Question 7

Refer to the given Venn diagram and select the incorrect option.

Accepted Answer

P could be an organelle that liberates oxygen and Q could be an organelle that consumes oxygen.

Answer

P could be an organelle that helps in oxidation of food stuff.

Answer

Q could be an organelle that provides green colour to the leaves.

Answer

R could be an organelle that is the site of protein synthesis

Question 8

Select the option that correctly identifies the incorrect match.
(i) Streptomyces – Causes malaria
(ii) Rhizobium – Bacterium responsible for curdling of milk
(iii) Penicillium – Fungus from which an antibiotic is obtained
(iv) Euglena – Nitrogen fixing bacteria
(v) Salmonella – Causes food poisoning

Accepted Answer

(i), (ii) and (iv) only

Answer

(i), (ii) and (iii) only

Answer

(iii), (iv) and (v) only

Answer

(i), (iv) and (v) only

Question 9

Which of the following statements is/are correct?
I. In neutralisation reaction, heat is always given out.
II. Phenolphthalein remains colourless in a window cleaner solution.
III. Tooth decay is caused by the presence of calcium salts.
IV. To dilute an acid, we should always add water to the acid.

Accepted Answer

I only

Answer

I and III only

Answer

III only

Answer

I, II, III and IV

Question 10

Refer to the given food web.

If a non-biodegradable insecticide known as DDT was sprayed onto the pine tree, in which of the following
organisms will most of the DDT eventually accumulate?

Accepted Answer

Snake

Answer

Golden-crowned kinglet

Answer

Red-tailed hawk

Answer

Oak acorns

Olympiad Test: High Order Thinking Skills (HOTs)- 2 - Free MCQ with solutions

MCQ Practice Test & Solutions: Olympiad Test: High Order Thinking Skills (HOTs)- 2 (10 Questions)

Refer to the given figures P, Q, R and S and select the correct statement regarding them.

The guven graph population index of three animal species in the world over a period of last 30 years. Select the correct option regarding P, Q and R.

Select the correct match.
(i) Mohair – Angora rabbit
(ii) Merino – Vicuna
(iii) Angora wool – Angora goat
(iv) Cashmere – Kashmiri goat

A block of mass 10 kg is suspended 10 kg through two light spring balances as
shown in figure.
Choose the correct option.
(Neglect the mass of a spring balance)

A few substances are grouped randomly as follows :
Group I : Nitric acid, sulphuric acid, citric acid
Group II : Ammonia, baking soda, caustic soda
Group III : Oxalic acid, tartaric acid, carbonic acid
The odd ones in groups I, II and III are respectively

A factory was built near a river. Factory waste containing mercury was discharged into the river. The given graph shows the amount of mercury at four different locations in the river.
Select the option that correctly identifies the area with least (P) and most (Q) number of fish.

Refer to the given Venn diagram and select the incorrect option.

Which of the following statements is/are correct?
I. In neutralisation reaction, heat is always given out.
II. Phenolphthalein remains colourless in a window cleaner solution.
III. Tooth decay is caused by the presence of calcium salts.
IV. To dilute an acid, we should always add water to the acid.

Refer to the given food web.
If a non-biodegradable insecticide known as DDT was sprayed onto the pine tree, in which of the following
organisms will most of the DDT eventually accumulate?

Science Olympiad Class 8

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Olympiad Test: High Order Thinking Skills (HOTs)- 2 - Free MCQ with solutions

MCQ Practice Test & Solutions: Olympiad Test: High Order Thinking Skills (HOTs)- 2 (10 Questions)

Refer to the given figures P, Q, R and S and select the correct statement regarding them.

The guven graph population index of three animal species in the world over a period of last 30 years. Select the correct option regarding P, Q and R.

Select the correct match. (i) Mohair – Angora rabbit (ii) Merino – Vicuna (iii) Angora wool – Angora goat (iv) Cashmere – Kashmiri goat

A block of mass 10 kg is suspended 10 kg through two light spring balances as shown in figure.Choose the correct option. (Neglect the mass of a spring balance)

A few substances are grouped randomly as follows : Group I : Nitric acid, sulphuric acid, citric acid Group II : Ammonia, baking soda, caustic soda Group III : Oxalic acid, tartaric acid, carbonic acid The odd ones in groups I, II and III are respectively

A factory was built near a river. Factory waste containing mercury was discharged into the river. The given graph shows the amount of mercury at four different locations in the river.Select the option that correctly identifies the area with least (P) and most (Q) number of fish.

Refer to the given Venn diagram and select the incorrect option.

Which of the following statements is/are correct? I. In neutralisation reaction, heat is always given out. II. Phenolphthalein remains colourless in a window cleaner solution. III. Tooth decay is caused by the presence of calcium salts. IV. To dilute an acid, we should always add water to the acid.

Refer to the given food web.If a non-biodegradable insecticide known as DDT was sprayed onto the pine tree, in which of the following organisms will most of the DDT eventually accumulate?

Science Olympiad Class 8

Science Olympiad Class 8

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About this Class 8 Practice Test

Explore more Class 8 Study Resources

Select the correct match.
(i) Mohair – Angora rabbit
(ii) Merino – Vicuna
(iii) Angora wool – Angora goat
(iv) Cashmere – Kashmiri goat

A block of mass 10 kg is suspended 10 kg through two light spring balances as
shown in figure.
Choose the correct option.
(Neglect the mass of a spring balance)

A few substances are grouped randomly as follows :
Group I : Nitric acid, sulphuric acid, citric acid
Group II : Ammonia, baking soda, caustic soda
Group III : Oxalic acid, tartaric acid, carbonic acid
The odd ones in groups I, II and III are respectively

A factory was built near a river. Factory waste containing mercury was discharged into the river. The given graph shows the amount of mercury at four different locations in the river.
Select the option that correctly identifies the area with least (P) and most (Q) number of fish.

Which of the following statements is/are correct?
I. In neutralisation reaction, heat is always given out.
II. Phenolphthalein remains colourless in a window cleaner solution.
III. Tooth decay is caused by the presence of calcium salts.
IV. To dilute an acid, we should always add water to the acid.

Refer to the given food web.
If a non-biodegradable insecticide known as DDT was sprayed onto the pine tree, in which of the following
organisms will most of the DDT eventually accumulate?