CLASS 7TH DAY 6

INTRODUCTION

Blood Relations

Mother’s or father’s son	Brother
Mother’s or father’s daughter	Sister
Mother’s or father’s brother	Uncle
Mothers or father’s sister	Aunt
Mothers or father’s father	Grandfather
Mother’s or father’s mother	Grandmother
Son’s wife	Daughter-in-Law
Daughter’s husband	Son-in-Law
Husband s or wife’s sister	Sister-in-Law
Husband’s or wife’s brother	Brother-in-Law
Brother’s son	Nephew
Brother’ daughter	Niece
Uncle or aunt’s son or daughter	Cousin
Sister’s husband	Brother-in-Law
Brother’s wife	Sister-in-Law
Grandson’s or Grand daughter’s daughter	Great grand daughter

In this type of questions, a round-about description is given in the form of certain small relationships and direct relationship between the persons concerned is to be Deciphered.

TYPE 1 SIMPLE BLOOD RELATION QUESTIONS

Ex. 1. Pointing to a photograph, a man said, I have no brother or sister but that man’s father is my father’s son.” Whose photograph was it ?

(a) His own

(b) His son’s

(d) His nephews

(e) None of these

Sol. Since the narrator has no brother, his father’s son is he himself. So, the man who is talking is the father of the man in the photograph or the man in the photograph is his son. Hence, the answer is (b).

Ex. 2. Anil introduces Rohit as the son of the only brother of his father’s wife. How is Rohit related to Anil ?

(a) Cousin (b) Son (c) Uncle (d) Son-in-law ‘ (e) Brother

Sol. The relations may be analyzed as follows : Fatheis wife — Mother; Mother’s brother — Uncle; Uncle’s son — Cousin. So, Rohit is Anil’s cousin. Hence, the answer is (a).

Ex. 3. Pointing out to a photograph, a man tells his friend, “She is the daughter of the only son of my father’s wife.” How is the girl in the photograph related to the man ?

(a) Daughter (b) Cousin (c) Mother (d) Sister (e) Niece

Sol. The relations may be analyzed as follows :

Father’s wife — Mother; Mother’s only son — Himself. So, the girl is man’s daughter. Hence, the answer is (a).

Ex. 4. X introduces Y saying, He is the husband of the grand daughter of the-father of my father.” How is Y related to X ?

(a) Brother (6) Son (c) Brother-in-law (d) Nephew (e) Son-in-law

Sol. The relations may be analyzed as follows : Father’s father — Grandfather, Grandfather’s Grand daughter — Sister; Sister’s husband — Brother-in-law. So, Y is X’s brother-in-law. Hence, the answer is (c).

Ex. 5. Pointing out to a lady, Rajan said, “She is the daughter of the woman who is the mother of the husband of my mother.* Who is the lady to Rajan ?

(a) Aunt (b) Grand daughter (c) Daughter (d) Sister (e) Sister-in-law

Sol. The relations may be analysed as follows : Mother’s husband — Father, Father’s mother — Grandmother; Grandmother’s daughter — Father’s sister; Father’s sister — Aunt. So, the lady is Rajan’s aunt.

Hence, the answer is (a).

Aisa kyon hota h: Scientific Explanations

Sticky Notes come off easily

Reason for Sticky notes to come off easily is because their adhesive is uneven. Post-it Notes feature a plastic adhesive that unfolds out in blobs throughout the paper. When you paste a Post-it onto the board, only a few of these blobs (technically referred to as micro-capsules) contact the surface to maintain the notice caught there. Thus, you’ll be able to unstick it, and when you paste it something else, the unused blobs of glue can take over the adhesive position. Eventually, all of the capsules of glue will get used up or clogged with dust, and the sticky note will not stick anymore.

Gum is chewy

Gum is chewy because it’s made of rubber. Early gums obtained their elastic texture from chicle, a natural kind of latex rubber. Now, your bubble gum is made with artificial rubbers like styrene butadiene ( utilized in automobile tires) or polyvinyl acetate (utilized in Elmer’s glue) to imitate the effect of chicle.

Office buildings are ever-so-slightly taller at night

After all the staff goes home, tall workplace buildings get just a bit taller. A 1300-foot-tall skyscraper shrinks about 1.5 millimeters under the load of 50,000 occupants (assuming they weigh about the human average).

Polishing Shoes is like filling in a road’s potholes.

Owing to the tiny-tiny scrapes and scratches, regular leather appears dull as it scatters the light whatever light hits the material. So as you polish, it gets coated with a fine layer of wax, filling all the scratches and scrapes. Because the surface is more uniform, rays of light bounce back toward your eye more evenly, making it look shiny.

You could heat your house with just 70 people.

People give off body heat all the time. When a number of people reside in a room, it gets heated without any room heater. About 70 people in motion, or 140 people still, figuring that humans radiate 100-200 watts of heat normally and that the house uses four electric storage heaters.

Density explains why cold water feels colder than air at the same temperature.

Our body loses heat nearly 25 times more quickly in water than it would in air at the same temperature, since water is much denser than air. Water takes a lot of heat to raise its temperature even a little, and it’s very good at retaining heat or cold (the reason why hot tea stays hot for a long time, and why the sea is much cooler than land). Water is a great conductor, so it’s very effective at transferring that heat or cold to your body.

Water cleans well

Water cleans well because it has asymmetrical molecules. Because water molecules are triangular—made of two hydrogen atoms stuck to one oxygen atom—.Water acts like a magnet to dirt. This makes water excellent at sticking to other molecules. When you wash away dirt, the water molecules stick to the dirt and pull it away from whatever surface it was on.

Glass breaks easily

It is because of the fact that constituents of glass are loosely arranged. Glass cannot absorb/dissipate energy , because in this the constituents(atoms) cannot rearrange themselves quickly to retain the glass’s structure, so it collapses, shattering fragments everywhere. While other solid materials, like metals, glass is made up of amorphous, loosely packed atoms arranged randomly and can rearrange themselves easily.

Read a novel

JIVAN GYAN

Today we will learn about 3 Mudra which practicing daily for 15min we can boost up OUR Memory and Concentration power. Click on learn more to watch the video explaining the same.