Eyes

Butterflies

Eagles

shark

dog

Science Quiz Competition 13:

prepared by www.funscience.in

1. In Photosynthetic process, atmospheric carbon dioxide is _______ to carbohydrates

a) oxidised

b) Reduced

c) Neutralised

d) Burnt

Answer: b

2. When water enters the guard cells the stomata

a) Opens

b) Closes

c) Open or closes

d) No effect

Answer: a

3. On seeing good food our mouth waters. This fluid is actually

a) Water

b) Hormone

c) Enzyme

d) None of the above

Answer: c

4. The enzyme Pepsin is inactive in stomach without the presence of

a) Nitric Acid

b) Hydrochloric acid

c) Acetic acid

d) Butyric acid

Answer: b

5. Villi present on the inner lining of the intestinal wall

a) Secretes enzymes for digestion

b) Secretes hormones

c) Decreases the surface area for absorption

d) Increases the surface area for absorption

Answer: d

Science Quiz Competition 12

Question 1: The three Rs to save the environment are

a) Remember, Reduce, Reuse

b) Recall, Reduce, Refund

c) Reduce, Recycle, Reuse

d) Reduce, Refund, Reuse

Answer: c

Question 2: Wild life includes

a) Wild animals only

b) Wild plants only

c) Wild plants and animals

d) All plant and animals

Answer: c

Question 3: A potted plant kept in a room tends to bend towards the direction of light. This movement is called

a) Photographism

b) Photonastism

c) Photoperiodism

d) Phototropism

Answer: d

Question 4: If one neutron is added to helium nucleus, the result is
a.       Lithium
b.      Helium
c.       Hydrogen
d.      Carbon

Answer: b

Question 5: Reaction of a substance x with alcohol in presence of acid as a catalyst produces fruity smell. X is a/an
a.       Aldehyde
b.      Carboxylic acid
c.       Ketone
d.      Alkene

Answer: b

Science Quiz prepared by www.funscience.in

Science Quiz Competition 11:

Question 1: The tendency of an element to attract a shared pair of electrons towards itself is called _________?

Question 2: In modern periodic table all elements are arranged in increasing order of their ____________?

Question 3: Those elements which have same number of neutrons in their nucleus are called ____________?

Question 4: The repetition of elements of similar chemical characteristics after some interval in periodic table is known as ________?

Question 5: Which group of periodic table is also known as chalcogens?

Answer 1: Electronegativity

Answer 2: Atomic number

Answer 3 : Isotones

Answer 4: Periodicity

Answer 5: Group 16

Science Quiz Competition 10:

Question 1: What is the chemical name of washing soda?

Question 2: What is full form of PTFA?

Question 3: What is the S. I. unit of power of lens?

Question 4: Name the scientist who discovered superconductivity?

Question 5: In our body pancreas gland produces two types of hormones namely __________ and _________ ?

Answer 1: Sodium Carbonate Decahydrate

Answer 2: Polytetrafluoroethane

Answer 3: Dioptre

Answer 4: Prof. H kammerling Onnes

Answer 5: Insulin, glucagon

Science Quiz Competition 9:

Question 1: Who proposed the theory of natural selection?

Question 2: The UV radiation from the sun is likely to cause _____________ in human.

Question 3: Which hormone is also known as fight or flight hormone?

Question 4: Which planet in our solar system is known as earth’s sister planet?

Question 5: What is the full form of APPLE?

Answer 1: Charles Darwin

Answer 2: Skin Cancer

Answer 3: Adrenaline hormone

Answer 4: Venus

Answer 5: Arian Passenger Pay Load Experiment

Science Quiz Competition 8:

Question 1: Which part of our body produces blood?
Question 2: Out of sodium and potassium which have smaller size?
Question 3: A person is suffering from a disease named 'Goitre'. Which endocrine gland of the person is not functioning properly?
Question 4: World environment day is celebrated on _________?
Question 5: Expand INSAT.


Answer 1: Bone marrow
Answer 2: Sodium
Answer 3: Thyroid gland
Answer 4: June 5
Answer 5: Indian National Satellite

For other valueable information go to www.funscience.in

Science Quiz Competition 7:

Question 1:- Human ears can listen only those sounds whose frequency lies between ________Hz to _________ Hz.

Question 2:- At what temperature density of water is maximum?

Question 3:- Out of methane and butane which gas produces more heat on burning?

Question 4:- Who discovered X rays?

Question 5:- Name the radioisotope which is used to cure cancer disease?

Answer 1: 20 Hz to 20000 Hz

Answer 2: 4⁰C

Answer 3: Methane

Answer 4: Wilhem Karl Roentgen

Answer 5: Co-60

Science Quiz Competition 6:

Question 1:- Name the best quality coal?

Question 2:- Who discovered the presence of electrons in an atom?

Question 3:- What is a Gel?

Question 4:- What is full form of OIL?

Question 5:- Convert -100⁰ C into Kelvin scale of temperature?

Answer 1: Anthracite

Answer 2: J J Thompson

Answer 3: It is a solution in which a liquid solute is dissolved in a solid solvent.

Answer 4: Oil India Limited

Answer 5: 173 K

Tricks to learn Important PeriodicTable Groups

    G 1:-   H,      Li, Na, K,    Rb,  Cs,       Fr

           (Hamari LiNa    ki   rubi   se friendship),

G 2:- Be,    Mg,    Ca,   Sr,       Ba,    Ra        (Beta mange car scooter baap roe) G 13:- B,       Al,    Ga,  In, Tl,          (Bring Aloo Gajar In Thali) G 14:- C,        Si,      Ge,      Sn,        Pb        (Carbon Singh Ge(ji) Send to Punjab) G 15:- N,            P,     As, Sb,    Bi          (Natkhat Pyare Asi  Sab Bachey) G 16:- O, S,          Se,    Te, Po            (O Saurav Sethi Tea Peo) G 17:-  F,     Cl, Br, I,  At            (Face, C  B   I   At home) G 18:- He,        Ne,      Ar,  Kr,         Xe,     Rn            (Heena, Neena Aur Kreena jeetey Rehna) Tricks to learn 4th Period of Periodic Table

Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn ( From Atomic No. 21 to 30) Still  Trying Various Creative Methods For Controlling Naughty Children Zini or (Story Method) स्केन्डनेविया (Scandium) नगर में समुद्र के किनारे टाईटेनिक (Titanium) जहाज खड़ा था।  उस पर वन्दना (Vanadium) नाम की लड़की थी जिसके चप्पल क्रोम (Chromium) चमड़े के बने थे।  वह मनगनेश (Manganese) मन्दिर में पूजा करने जाती है। मन्दिर के बाहर लोहे (Iron) की जाली लगी है।  तभी वहाँ एक कोबरा (Cobalt) साँप आता है जो निकल (Nickel) की तरह चमकता है। साँप मन्दिर में ताँबे (Copper) के बर्तन में रखा पानी पीकर उसमें सिंक ( Zink) कर जाता है।

Science Quiz Competition 5:

Question 1: Name the lightest metal found on earth?

Question 2: Name the constituents of Bronze?

Question 3: Natural magnets are made up of which mineral?

Question 4: What are chalcogens?

Question 5: Why 1^st group of periodic table is called alkali metals?

Answer 1: Lithium metal

Answer 2: Copper and Tin

Answer 3: Magnetite (Loadstone)

Answer 4: The elements generally used to form ores are called chalcogens. Group 16 elements (oxygen family) in periodic table belong to chalcogen family.

Answer 5: Because the oxides produced by 1^st group elements are alkaline (basic) in nature.


www.funscience.in

Science Quiz Competition 4:

Question 1: The gas cylinders used by deep sea divers for breathing during diving contain a mixture  of two gases. One is oxygen and the other is __________?

Question 2: During the process of galvanization which metal is deposited over iron?

Question 3: The metal which is always kept in kerosene oil is _____________?

Question 4: Except calcium which other element is essential for healthy growth of teeth and bones?

Question 5: What is the structural and functional unit of kidney?

Answer 1: Helium gas

Answer 2: Zinc metal

Answer 3: Sodium metal

Answer 4: Magnesium

Answer 5: Nephron

Science Quiz Competition 3:

Question 1: What happens when diamond is burnt?

Question 2: Which gas is known as laughing gas?

Question 3: Name the gas which is mixed in LPG cylinders to detect its leakage?

Question 4: Which metal forms amalgams when mixed with other elements?

Question 5: Name the non-metal found in liquid state at room temperature?

Answer 1: It burns and produces carbon dioxide gas.

Answer 2: Nitrous oxide gas

Answer 3: Ethyl mercaptan gas

Answer 4: Mercury metal

Answer 5: Bromine



Previous                                 www.funscience.in                                          Next 

Science Quiz Competition 2:

Question 1:- What is full form of DDT?

Question 2:- What is the number of genes present in human beings?

Question 3:- What is the other name of Vitamin B1?

Question 4:- Who discovered the presence of nucleus in atoms?

Question 5:- The unique property of carbon to make bonds with other carbon atoms is called _______________?

Answer 1: Dichlorodiphenyltrichloroethane

Answer 2: 46 genes

Answer 3: Thiamine

Answer 4: Earnest Rutherford

Answer 5: Catenation

Previous                                 www.funscience.in                                          Next

Science Quiz Competition 1:

Question 1:- Which collective term is used for disease causing bacteria?

Question 2:- Name the protozoa responsible for spreading Malaria?

Question 3:- Name the largest gland present in human body?

Question 4:- The nature of our blood is __________?

Question 5:- The colour of sky is blue due to __________?

Answer 1: Pathogens

Answer 2: Plasmodium Vivax

Answer 3: Liver

Answer 4:- Slightly alkaline

Answer 5:- Atmospheric refraction of light.

Question:- Why plants look green?

Answer:- Mostly plants look green due to the presence of chlorophyll pigment. The colour of the object is the colour of the light reflected by it. When white light consisting of seven colours falls on plants, the chlorophyll present in plants absorbs all the colours except green. So, when a beam of white light falls on a plant, the green colour of the light is reflected. That is why, plants look green.

Question:- What are chloroplasts?

Answer:- The main sites of photosynthesis in a plant leaf are small cell organelles called chloroplasts or plastids. Chloroplast is basically a sac like structure containing chlorophyll pigment. Chloroplast can be seen just below the upper epidermis in a tissue, called the palisade. Chloroplasts are usually spherical or ovoid vesicles bounded by an envelope of two membranes and filled with a fluid matrix or stroma. In the stroma of chloroplast many flattened, ovoid sacs called thylakoids are present. At places thylakoids are closely packed on one another to form stacks of discs called grana (singular granum). The thylakoids of one granum are connected to the thylakoids of another granum through stromal lamellae.

Question:- What is significance of photosynthesis?

Answer:- 

1.      Food is prepared by photosynthesis which is used by all the plants and animals.

2.   Photosynthesis decreases the amount of CO₂ present in atmosphere; hence it helps in reducing pollution.

3.   During the process of photosynthesis O₂ gas is produced as a by product, which is used for respiration by animals.

4.   During photosynthesis CO₂ is used by plants and O₂ is liberated. So, photosynthesis helps in maintaining the balance between CO₂ and O₂ present in air.

5.    Many photosynthetic products such as coal, petroleum and natural gas are important sources of energy which are used to run our machines. 

Question:- Explain Nutrition in amoeba.

Answer:- Amoeba is an important protozoa found in fresh water. It feeds on microscopic plants and animals present in water. The mode of nutrition in amoeba is Holozoic. And the process of obtaining food by amoeba is called phagocytosis. The different processes involved in the nutrition of amoeba are:

1.   Ingestion

            Ingestion is the process of taking food in the body. Amoeba is a unicellular animal, so it doesn’t have a mouth for ingestion of food. Amoeba ingests the food by encircling it by forming pseudopodia. When the food is completely encircled, the food is engulfed in the form of a bag called food vacuole.

2.   Digestion

            Digestion is the process of breaking the large and insoluble molecules in small and water soluble molecules. In amoeba, several digestive enzymes react on the food present in the food vacuoles and break it down into simple and soluble molecules.

3.   Absorption

           

The food digested by digestive enzymes is then absorbed in the cytoplasm by the process of diffusion. While the undigested food remains in the food vacuole. If a large amount of food is absorbed by amoeba, the excess food is stored in the cytoplasm in the form of glycogen and lipids.

4.   Assimilation

            During this step the food absorbed by the cytoplasm is used to obtain energy, growth and repair. This process of utilizing absorbed food for obtaining energy, repair and growth is called assimilation.

5.      Egestion

            When a sufficient amount of undigested food gets collected in the food vacuole, it is thrown out of the body by rupturing cell membrane. The process of removal of undigested food from the body is called egestion.

Question:- Explain Nutrition in grasshopper (or cockroach).

Answer:- Grasshopper (or cockroach) is a multicellular organism. So, in grasshopper (or cockroach) the different processes of nutrition takes place in fully developed digestive system. The digestive system is a system of organs and glands concerned with obtaining, digesting and absorbing nutrients from food. The digestive system of grasshopper (or cockroach) is divided into three parts:

1)      Foregut

2)      Midgut

3)      Hindgut

Foregut

           

The foregut of grasshopper (or cockroach) consists of following organs: mouth, oesophagus or food pipe, crop and gizzard.

Midgut

            The midgut of grasshopper (or cockroach) consists of stomach and ileum.

Hindgut

            Colon and rectum constitutes the hind gut of a grasshopper (or cockroach). 

 

 After discussing the digestive system let’s now discuss the different processes of nutrition in grasshopper.

1.   Ingestion

In grasshopper (or cockroach) food is ingested through the mouth with the help of forelegs and mouth parts.

2.   Digestion

            In grasshopper (or cockroach) the digestion of food starts in the mouth, where the saliva secreted by salivary glands mixes with the ingested food. The saliva contains some enzymes which digest starch present in the food. Saliva also helps in lubrication and softening of food. This partially digested food passes through the oesophagus into crop where it is stored temporarily. Then, the food passes into gizzard. Here, the food is finely ground by tough walls of gizzard. From gizzard, the food goes into stomach. In the stomach, the enzymes secreted by elongated glands called hepatic caeca get mixed with the food to digest it completely.

3.   Absorption

            The digested food is then absorbed by the walls of ileum when the digested good passes from the stomach into ileum.

4.   Assimilation

            The food absorbed by the walls of ileum is then supplied to all the parts of grasshopper (or cockroach) and is used to obtain energy, as well as for growth and repair of the body.

5.   Egestion

            The food not digested by grasshopper (or cockroach) goes from ileum to colon. Here water is absorbed from it. Finally, the undigested food is temporarily stored in the rectum. From the rectum the undigested food is removed out of the body through anus.