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651.

After we chew our food properly, it tastes sweet. Give reasons

Answer» After we chew our food properly, it tastes sweet. Give reasons
652.

22. How much will the mole splendor of a molecule in aquatic solution?

Answer» 22. How much will the mole splendor of a molecule in aquatic solution?
653.

_________ is important in osmosis and ionic balance.

Answer»

_________ is important in osmosis and ionic balance.


654.

Fill in the blanks: [2 MARKS] a. Five kingdom classification of living organisms is given by ____________. b. Basic smallest unit of classification is_________________. c. Prokaryotes are grouped in Kingdom ____________. d. Common fungi used in preparing the bread is _____________.

Answer»

Fill in the blanks: [2 MARKS]

a. Five kingdom classification of living organisms is given by ____________.
b. Basic smallest unit of classification is_________________.
c. Prokaryotes are grouped in Kingdom ____________.
d. Common fungi used in preparing the bread is _____________.

655.

What is the starting point and end point of human digestive system? What is the length of large and small intestinal system? [3 MARKS]

Answer»

What is the starting point and end point of human digestive system? What is the length of large and small intestinal system? [3 MARKS]

656.

Post consumer recycling is a better process because:

Answer»

Post consumer recycling is a better process because:


657.

Which condition affect the binding of CO2 with Hb in tissues and alveoli?

Answer» Which condition affect the binding of CO2 with Hb in tissues and alveoli?
658.

Assertion (A): Xylem is composed of different kinds of elements.Reason (R): Xylem parenchyma cells are living and thin walled. The main function of xylem parenchyma is to store starch and fatty substances.

Answer»

Assertion (A): Xylem is composed of different kinds of elements.

Reason (R): Xylem parenchyma cells are living and thin walled. The main function of xylem parenchyma is to store starch and fatty substances.



659.

The process of colouring the cellular components for better observation is called:

Answer» The process of colouring the cellular components for better observation is called:
660.

Which of the following sets contain only the parts of a pistil ?

Answer»

Which of the following sets contain only the parts of a pistil ?



661.

What would happen if the leaves of a money plant is coated with oil?

Answer»

What would happen if the leaves of a money plant is coated with oil?

662.

ethyl 3 chloro formyl 5 hydroxo 4 en oate structure

Answer» ethyl 3 chloro formyl 5 hydroxo 4 en oate structure
663.

Structures present in the small intestine that increase the surface area for absorption are termed as ________ .

Answer»

Structures present in the small intestine that increase the surface area for absorption are termed as ________ .

664.

__________ are the compounds made up of carbon,hydrogen and oxygen.

Answer»

__________ are the compounds made up of carbon,hydrogen and oxygen.


665.

Describe any four animal food products and mention their sources.

Answer» Describe any four animal food products and mention their sources.
666.

Adulterants like dry papaya seed and mineral oil coating on pepper are known to cause:

Answer»

Adulterants like dry papaya seed and mineral oil coating on pepper are known to cause:



667.

Born Haber's cycle ofAlBr3

Answer» Born Haber's cycle ofAlBr3
668.

The process of taking in food through the mouth is called ___ .

Answer»

The process of taking in food through the mouth is called ___ .

669.

What is a joint? Give examples.

Answer» What is a joint? Give examples.
670.

Why do animals like tigers move too fast?

Answer» Why do animals like tigers move too fast?
671.

Identify the part in a pitcher plant from where the digestive juices are secreted to digest insects.

Answer»

Identify the part in a pitcher plant from where the digestive juices are secreted to digest insects.

672.

How do plants get nitrogen?

Answer»

How do plants get nitrogen?

673.

Which of the following scientists created the first vaccines?

Answer»

Which of the following scientists created the first vaccines?


674.

Explain the following digestive organ and write its functions 1. stomach

Answer»

Explain the following digestive organ and write its functions

1. stomach

675.

What is vaccine? How is vaccination beneficial for the immune system?

Answer» What is vaccine? How is vaccination beneficial for the immune system?
676.

(a) In which part of the plant Robert Hooke discovered a Cell, and how did these cells appear?(b) Organisms which can be seen only with the help of a microscope are called as?

Answer»

(a) In which part of the plant Robert Hooke discovered a Cell, and how did these cells appear?



(b) Organisms which can be seen only with the help of a microscope are called as?



677.

Which of the following are the symptoms of Typhoid?

Answer»

Which of the following are the symptoms of Typhoid?


678.

Select the appropriate measures that can be taken to control mosquitoes.

Answer»

Select the appropriate measures that can be taken to control mosquitoes.


679.

What is the scientific name of peas?

Answer»

What is the scientific name of peas?


680.

write the equation of photosynthesis and mark as well as validate from which molecule the by-product is obtained.

Answer» write the equation of photosynthesis and mark as well as validate from which molecule the by-product is obtained.
681.

Genetic engineering is possible because:

Answer»

Genetic engineering is possible because:


682.

60 An athlete takes 30 breaths per minute at room temperature. The air inhaled in each breath is 300 mL which contains 20% of oxygen by volume. The exhaled air contains 10% of oxygen by volume. Assuming that all the oxygen consumed is used for converting glucose into CO2(g) and H2O(l), how much of glucose will be burnt in the body for one hour and what will be the heat produced? Given: enthalpy of combustion of glucose = -2822.5 kJ/mol at 0C and room temperature is 300K

Answer» 60 An athlete takes 30 breaths per minute at room temperature. The air inhaled in each breath is 300 mL which contains 20% of oxygen by volume. The exhaled air contains 10% of oxygen by volume. Assuming that all the oxygen consumed is used for converting glucose into CO2(g) and H2O(l), how much of glucose will be burnt in the body for one hour and what will be the heat produced? Given: enthalpy of combustion of glucose = -2822.5 kJ/mol at 0C and room temperature is 300K
683.

What is climate

Answer»

What is climate

684.

Explain the characterics of the kingdom Protista ?

Answer» Explain the characterics of the kingdom Protista ?
685.

Green plants are called ___ since they synthesise their own food.

Answer»

Green plants are called ___ since they synthesise their own food.

686.

What is xylem? What is its function? [2 MARKS]

Answer»

What is xylem? What is its function? [2 MARKS]

687.

Excretory organs in Amoeba are :- Contractile vacuolesEndoplasmic reticulum MitochondriaNone of these

Answer»

Excretory organs in Amoeba are :-


Contractile vacuoles

Endoplasmic reticulum

Mitochondria

None of these

688.

Good afternoon mam/sir my query to you is......that how do plants excretes? Thank you

Answer» Good afternoon mam/sir
my query to you is......that how do plants excretes?
Thank you
689.

Statement 1: The body of an earthworm is made up of rings joined end to end. Statement 2: The ring helps the earthworm in locomotion

Answer»

Statement 1: The body of an earthworm is made up of rings joined end to end.

Statement 2: The ring helps the earthworm in locomotion


690.

Question 21 ‘A’ got her gall bladder removed surgically as she was diagnosed with stones in her gall bladder. After the surgery, she faced problems in digestion of certain food items when consumed in bulk. Can you tell which kind of food items would they be and why?

Answer» Question 21
‘A’ got her gall bladder removed surgically as she was diagnosed with stones in her gall bladder. After the surgery, she faced problems in digestion of certain food items when consumed in bulk. Can you tell which kind of food items would they be and why?
691.

Besides distillation, the other way of desalination is:

Answer»

Besides distillation, the other way of desalination is:


692.

Why do our heart rate increases when we run

Answer» Why do our heart rate increases when we run
693.

A common meal of Punjab is:

Answer»

A common meal of Punjab is:


694.

Weak muscles, pain in the bone and joints, low immunity, poor metabolism are the signs of deficiency of an important nutrient. Choose that nutrient from the options given below.

Answer»

Weak muscles, pain in the bone and joints, low immunity, poor metabolism are the signs of deficiency of an important nutrient. Choose that nutrient from the options given below.


695.

Which type of teeth are used when a person is biting off an apple?

Answer»

Which type of teeth are used when a person is biting off an apple?



696.

Question 2In which of the following groups of organisms, food material is broken down outside the body and absorbed?(a) Mushroom, green plants, Amoeba(b) Yeast, mushroom, bread mould(c) Paramecium, Amoeba, Cuscuta(d) Cuscuta, lice, tapeworm

Answer»

Question 2

In which of the following groups of organisms, food material is broken down outside the body and absorbed?



(a) Mushroom, green plants, Amoeba

(b) Yeast, mushroom, bread mould

(c) Paramecium, Amoeba, Cuscuta

(d) Cuscuta, lice, tapeworm



697.

Define. (a) Oviparous (b) Viviparous (c) Pollination (d) Fertilization (e) Budding

Answer»

Define.



(a) Oviparous



(b) Viviparous



(c) Pollination



(d) Fertilization



(e) Budding

698.

Find the average of first six odd numbers ending with 3.

Answer» Find the average of first six odd numbers ending with 3.
699.

Statement 1: Poultry is India's most efficient converter of low-fibre foodstuff into highly nutritious animal protein food.Statement 2: Poultry birds are fed with food having high fibre content.Statement 3: Poultry birds give us chicken and eggs which are protein-rich food.

Answer»

Statement 1: Poultry is India's most efficient converter of low-fibre foodstuff into highly nutritious animal protein food.

Statement 2: Poultry birds are fed with food having high fibre content.

Statement 3: Poultry birds give us chicken and eggs which are protein-rich food.



700.

Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change.What colour change would they have observed? Give reasons for your answer.

Answer» Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change.

What colour change would they have observed? Give reasons for your answer.