Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

As we move LEFT to right in a period,the VALENCE electrons increases only upto GROUP 14 ,where it becomes 4 ,and then it decreases, i.e,in group 17 ,it becomes 1.

On moving down the group, the number of valence electrons, remains the same.

ELECTRONIC configuration of sodium(NA) is

1s2 2s2 2P6 3s1

Bcz it has 11 ELECTRONS.

And we know that no. Of electrons in outer SHELL are called valence electrons and same is the valency.

Here no. of electrons in outer orbital is 1 so the valency of sodium is 1.

ANSWER:

easy

Explanation:

Magnetic field LINES are closed continuous curves. They DIVERGE from the NORTH pole of a bar MAGNET and converge its south pole. INSIDE the magnet they move from south pole to north pole.

ANSWER:

•SHAVING and Makeup Mirrors. Concave mirrors are often used as shaving mirrors and makeup mirrors.

•Headlights. Concave mirrors are used in MOTOR vehicle headlights to SEND out strong beams of light.

ANSWER:

DUBBED TrEs-4 is the BIGGEST EXOPLANET

ANSWER:

because FOOD MAD there are attacked by INSECTS to flies

Answer:

hey mate....

I'm trying to HELP you.

Explanation:

I think here is your answer...

When you cut an apple, you are exposing it's INSIDES to the oxygen in the air. This CAUSES the PPO (POLYPHENOL oxidase) enzyme in the apple's flesh to oxidize the polyphenols, turning them into some other brown colored products. Hence, the color change.

I hope it may be helpful for you.

Thank you!

Answer:

It is absolutely true

Explanation:

This is because during HARDWORK a person consumes a lot of ENERGY. ONE MUST take rest to regain this energy.

Thank you

For giving me a chance

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ANSWER:

SUBLIMATION....as it is CHANGED DIRECTLY from solid to gaseous

Answer:

Hydrogen GAS

Hydrogen gas is LIBERATED when METALS react with ACIDS, as metals reduce the h+ ion generated by the acid to form hydrogen gas

For earth the major and primary source of energy is Sun. All other types of energy directly or INDIRECTLY are a RESULT of energy we RECEIVE from sun.

But there is an exception here.Geo thermal energy, i.e., energy DERIVED from the ground is because of nuclear fusion HAPPENING in the core of the earth.

ANSWER:They are CLASSIFIED as

Monoatomic  He

DIATOMIC  F2

Polyatomic NO3 AND Ch4

Explanation:

Answer:

METALS are both malleable and ductile in nature...........

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Answer:

Rainwater is being harvested at two huge complexes in GERMANY. ... SINCE 1993, a combination of rainwater harvesting and USED water is being supplied to the UNIVERSITY. The water is used for toilet flushing and supplied to labotories of the university for cooling and CLEANING purposes.

BIG REEL OF YARN IS CALLED SPOOL..

HOPE THIS HELPS U DEAR

HAVE A NICE DAY AHEAD...

AND MARK ME AS BRAINILIEST PLZZZ...

#amyra

ANSWER:

Here is the answer

Explanation:

MAMMAL no other answer

EXPLANATION:

the important role we can PLAY in SOLVING food problem in our countries don't waste food items eat the sufficient food that you NEED

Answer:

Heya here's ur answer...

A ventilator moves air into and out of the lungs (oxygen in and carbon dioxide out). It can be inserted through the mouth or nose, and down the trachea, or through a surgical opening, via tracheostomy. DEPENDING on the PATIENT’s medical condition, they may be able to use a respiratory mask in lieu of the breathing tubes. This is known as non-invasive mechanical ventilation.The amount of oxygen the patient RECEIVES can be controlled through a MONITOR connected to the ventilator. If the patient’s condition is particularly delicate, the monitor will be set up to send an alarm to the caregiver indicating an increase in air pressure.The machine WORKS by bringing in oxygen to the lungs and taking carbon dioxide out of the lungs. This allows a patient who has trouble breathing to receive the proper amount of oxygen. It also helps the patient’s body to heal, since it eliminates the extra energy of labored breathing.

Hope it helps you out..

thanks...

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ANSWER: RUSSIAN REVOLUTION

Explanation:

ANSWER:

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Often, plastics are burned in the open AIR. This leads to air pollution because POISONOUS chemicals are released into the atmosphere during combustion. PLUS, when ANIMALS or HUMANS inhale the polluted air it can affect their general well-being and cause respiratory disorders.

Answer:

All green VEGETABLES are good, they are full of minerals and vitamins. CARROT provides beta carotene to fight against carcinoma, BROCCOLI also has CANCER fighting vitamins and minerals . Garlic is good for heart and it fights cold.All citrus fruits provide us Vitamin C. Fruits provide us with vitamins and minerals in the most pure form since they are not cooked. All fruits are good. APPLE provides Vitamin A. Red grapes help in increasing the haemoglobin in our blood. watermelon, melon, grapes, bananas all provide health benefits.

Explanation: hope it helps !

stomach is a very important part of our digestive system . The stomach is a muscular organ located on the left SIDE of the UPPER abdomen. The stomach receives food from the ESOPHAGUS. As food reaches the end of the esophagus, it ENTERS the stomach through a muscular valve called the lower esophageal sphincter.

The stomach secretes acid and enzymes that DIGEST food.

#Aerosol:An aerosol is a SUSPENSION of fine solid particles or liquid droplets, in air or another gas.Examples of natural aerosols are fog, dust, forest exudates ,etc.

emulsion:- is Dispersion of one liquid into another liquid which is immiscible

A colloid is a heterogeneous mixture in which the dispersed particles are INTERMEDIATE in SIZE between those of a solution

suspension. The particles are spread evenly THROUGHOUT the dispersion MEDIUM, which can be a solid, liquid, or gas

ANSWER:

I am SORRY

there is no SENSE of HUMOUR for me

ANSWER:

RHIZOBIUM is our friend

Explanation:

because they HELP the TREES

Answer:

When heat FALLS on an OBJECT then object absorbs heat and RADIATE photons.

Hope its helpful.

ANSWER:

I will answer you SHORTLY

Answer:

Q.1: Fill in the blanks:

(a) The main steps of nutrition in humans are __________, __________, __________, _________ and __________.

(b) The largest gland in the human body is __________.

(c) The stomach releases hydrochloric acid and ___________ juices which act on food.

(d) The inner wall of the small intestine has many finger-like outgrowths called _________.

(e) Amoeba digests its food in the ____________ .

ANS : (a) The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation and egestion.

(b) The largest gland in the human body is liver.

(c) The stomach releases hydrochloric acid and digestive juices which act on food.

(d) The inner wall of the small intestine has many finger-like outgrowths called villi.

(e) Amoeba digests its food in the food vacuole.

Q.2: Mark 'T' if the statement is true and 'F' if it is false:

(a) Digestion of starch starts in the stomach. (T/F)

(b) The tongue helps in mixing food with SALIVA. (T/F)

(c) The gall bladder temporarily stores bile. (T/F)

(d) The ruminants bring back swallowed GRASS into their mouth and chew it for some time. (T/F)

Ans : (a) Digestion of starch starts in the stomach. (F)

(b) The tongue helps in mixing food with saliva. (T)

(c) The gall bladder temporarily stores bile. (T)

(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T)

Q.3: Tick ( ) mark the correct answer in each of the following:

(a) Fat is completely digested in the

(i) stomach

(ii) mouth

(iii) small intestine

(iv) large intestine

(b) Water from the undigested food is absorbed mainly in the

(i) stomach

(ii) food pipe

(iii) small intestine

(iv) large intestine

Ans : (a)small intestine.

(b) large intestine

Q.4: Match the items of Column I with those given in Column II:

above image

image above

Q.5: What are villi? What is their location and function?

Ans : Villi are tiny finger-like projections originating from the walls of the small intestine. They increase the surface area for absorption of the digested food. The blood vessels present inside the villi can absorb the nutrients from the digested food.

Q.6: Where is the bile produced? Which component of the food does it help to digest?

Ans : Liver SECRETES the bile juice which is stored in the gallbladder. Bile plays an important role in the digestion of fats.

Q.7: Name the type of carbohydrate that can be digested by ruminants but not by

humans. Give the reason also.

Ans : Cellulose is a type of carbohydrate that can be digested by ruminants and not

by humans. Ruminants have a large sac-like structure between small and large intestine where the food containing cellulose is digested by the action of certain bacteria. On the other hand, humans cannot digest cellulose, as the cellulose digesting enzymes are absent in them.

Q.8: Why do we get instant energy from glucose?

Ans : Glucose is a simple sugar. Carbohydrates, when consumed, have to be digested into glucose. As glucose can be easily absorbed in blood, it provides energy to the body. Hence, when glucose is directly taken, it does not have to be digested and thus acts as an instant source of energy.

Q.9: Which part of the digestive canal is involved in:

(i) absorption of food ________________.

(ii) chewing of food ________________.

(iii) killing of bacteria ________________.

(iv) complete digestion of food ________________.

(v) formation of faeces ________________.

Ans : (i) absorption of food small intestine

(ii) chewing of food buccal cavity

(iii) killing of bacteria stomach

(iv) complete digestion of food small intestine

(v) formation of faeces large intestine.

Q.10: Write one similarity and one difference between the nutrition in Amoeba and

human beings.

Ans : Similarity between nutrition in Amoeba and human beings:

Both Amoeba and humans require energy for the growth and maintenance of their bodies. This energy is derived from the food that they eat. The food that they consume is always in a complex form and is therefore broken down into simpler forms by the process of digestion. Hence, both these organisms are heterotrophs.

Differences between nutrition in Amoeba and human beings: Human beings have a complex digestive system and different nutrients are digested in separate regions. Amoeba does not have a digestive system and all the nutrients are digested in the food vacuole

question 11 and 12 are on book diagram based..

Q.13: Can we survive only on raw, leafy VEGETABLES/grass? Discuss.

Ans : No.Humans cannot survive only on raw, leafy vegetables, or grass. It is because the grass is rich in cellulose, which is a type of carbohydrate that humans are not able to digest due to the absence of cellulose-digesting enzymes.

Explanation:

hope u will like it!! it took so much time!!

• In physics, energy is the QUANTITATIVE property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

In SI base UNITS: J = kg m2 s−2

Other units: erg, calorie, kcal, BTU, kW⋅h, EV

ANSWER:

Acidic substances TURN blue litmus paper to red.

Hopes it HELPS!

ANSWER:

LIFE in OCEAN is ABUNDANT is TRUE

Answer:

USE DRIER in Washing Machine

and then Hair drier can be USED to INSTANTLY DRY that shirt.

ANSWER:

it is a rule which tells the direction of INDUCED CURRENT

Explanation:

the thumb, middle and INDEX should be perpendicular to each other.....where the thumb tells the motion, the index or forefinger tells magnetic field and middle finger tells us the current.

ANSWER:

B 12.04 into 1023

Explanation:

MARK me down as BRAINLIEAST and FOLLOW me

ANSWER:jute

Explanation: jute is a plant fibre which is useful in MANY WAYS such as MAKING jute ropes and bags

Explanation:

Ribonucleic acid (RNA) is a polymeric MOLECULE essential in various biological roles in coding, decoding, regulation and expression of GENES. RNA and DNA are NUCLEIC acids, and, along with lipids, proteins and carbohydrates, constitute the four MAJOR macromolecules essential for all known forms of life.

ANSWER:

in GARDEN TEAK TREE

mango tree

banana tree

apple tree

banyan tree

neem tree

babool tree

Answer:

Object will GET HOT and few of the light will be ABSORBED, reflected and REFRACTED.

... here is your ANSWER.... ..

HOPE it HELPS

HEYA mate! ▪️◾◼️

Sodium is The chemical element of atomic NUMBER 11, a soft silver-white REACTIVE METAL of the ALKALI metal group.

hope it helps you

Answer:

You take HELP of ncert class 8 sci book and ALSO form GOOGLE

Answer:

The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate GROUPS that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty ACID TAILS, and a phosphate-linked head GROUP.

Answer:

CONSIDER the following chemical REACTIONS X + BARIUM Chloride gives Y + SODIUM chloride tell the what type of reaction is this is Double Displacement Reaction.

ANSWER:

(a).No water is not pure because it is in GASEOUS FORM as the BOILING POINT of water is 100degree celsius

ANSWER:

Explanation:

Q1) please see the ATTACHMENT for answer

Q2)

See the attachment for answer

Thank you

Small RACKS and TWIGS are PROVIDED in the tray where silkworms are KEPT