dimagi paheli - 124 Why Animal eye shines at night ? Riddles for IQ Test| Hindi Paheli #Shorts

The eyes of cat, cow, buffalo and some nocturnal animals shine in night. It is due to presence of tapetum lucidum between the chorid and retina. This shining is due to the presence of a pigment made of

Question Stimulus :- DIRECTIONS: Read the following passage carefully and answer the questions given below it. Long, long ago in a big forest, there were many trees, among the cluster of trees, there was a very tall pine tree. He was so tall that he could talk to the stars in the sky. He could easily gaze over the heads of the other trees. One day, late in the evening, the pine tree saw a little girl approaching him. He could see her only because of his height. She was in tears. The pine tree bent as low as he could and asked the weeping girl. ‘What is the matter? Why are you crying?’ the little girl, still sobbing replied, ‘I was gathering flowers for the goddess Durga, Who I believe, would help my parents to overcome their poverty and I have lost my way’. The pine tree said to the little girl, ‘It is late in the evening. It will not be possible for you to return to your house, which is at the other end at the forest. Sleep for the night at this place.’ The pine tree pointed out to an open cave­like place under him. The little girl was frightened of wild animals. The girl quickly crept into the cave-­like place. The pine tree was happy and pleased with himself. He stood like a soldier guarding the place. The girl woke up in the morning and was amazed to see the pine tree standing like a guard outside the cave. Then her gaze travelled to the heap of flowers that she had gathered the previous night. The flowers lay withering on the ground. The pine tree understood what was going on in the girl’s mind. He wrapped his branches around the nearby flower trees and shook them gently. The little girl’s eyes brightened. But a great surprise awaited her. The pine tree brought out a bag of gold coins which had been lying for years in the hole in its trunk and gave it to the girl. With teary eyes she thanked her benefactor and went away. Why was little girl crying ?

Question Stimulus :- DIRECTIONS: Read the following passage carefully and answer the questions given below it. Long, long ago in a big forest, there were many trees, among the cluster of trees, there was a very tall pine tree. He was so tall that he could talk to the stars in the sky. He could easily gaze over the heads of the other trees. One day, late in the evening, the pine tree saw a little girl approaching him. He could see her only because of his height. She was in tears. The pine tree bent as low as he could and asked the weeping girl. ‘What is the matter? Why are you crying?’ the little girl, still sobbing replied, ‘I was gathering flowers for the goddess Durga, Who I believe, would help my parents to overcome their poverty and I have lost my way’. The pine tree said to the little girl, ‘It is late in the evening. It will not be possible for you to return to your house, which is at the other end at the forest. Sleep for the night at this place.’ The pine tree pointed out to an open cave­like place under him. The little girl was frightened of wild animals. The girl quickly crept into the cave-­like place. The pine tree was happy and pleased with himself. He stood like a soldier guarding the place. The girl woke up in the morning and was amazed to see the pine tree standing like a guard outside the cave. Then her gaze travelled to the heap of flowers that she had gathered the previous night. The flowers lay withering on the ground. The pine tree understood what was going on in the girl’s mind. He wrapped his branches around the nearby flower trees and shook them gently. The little girl’s eyes brightened. But a great surprise awaited her. The pine tree brought out a bag of gold coins which had been lying for years in the hole in its trunk and gave it to the girl. With teary eyes she thanked her benefactor and went away. Which word in the passage means ‘the state of being extremely poor’?

Question Stimulus :- DIRECTIONS: Read the following passage carefully and answer the questions given below it. Long, long ago in a big forest, there were many trees, among the cluster of trees, there was a very tall pine tree. He was so tall that he could talk to the stars in the sky. He could easily gaze over the heads of the other trees. One day, late in the evening, the pine tree saw a little girl approaching him. He could see her only because of his height. She was in tears. The pine tree bent as low as he could and asked the weeping girl. ‘What is the matter? Why are you crying?’ the little girl, still sobbing replied, ‘I was gathering flowers for the goddess Durga, Who I believe, would help my parents to overcome their poverty and I have lost my way’. The pine tree said to the little girl, ‘It is late in the evening. It will not be possible for you to return to your house, which is at the other end at the forest. Sleep for the night at this place.’ The pine tree pointed out to an open cave­like place under him. The little girl was frightened of wild animals. The girl quickly crept into the cave-­like place. The pine tree was happy and pleased with himself. He stood like a soldier guarding the place. The girl woke up in the morning and was amazed to see the pine tree standing like a guard outside the cave. Then her gaze travelled to the heap of flowers that she had gathered the previous night. The flowers lay withering on the ground. The pine tree understood what was going on in the girl’s mind. He wrapped his branches around the nearby flower trees and shook them gently. The little girl’s eyes brightened. But a great surprise awaited her. The pine tree brought out a bag of gold coins which had been lying for years in the hole in its trunk and gave it to the girl. With teary eyes she thanked her benefactor and went away. hy was little girl crying ?

Several short-lived radioactive species have been used to determine the age of wood or animal fossils. One of the most intresting substance is ""_(6)C""^(14) (half-life fossils, etc.). Carbon-14 is produced by the bombardment of nitrogen atoms present in the upper atmosphere with neutrons (from cosmic rays). ""_(7)N""^(14)+""_(0)n""^(1)to""_(6)C""^(14)+""_(1)H""_(1) Thus carbon-14 is oxidised, to CO""_(2) and eventually lingested by land animals. The death of plants or animals put an end to the intake of C""_(14) from the atmosphere. After this the amount of C""_(14) in the dead tissues starts decreasing due to its disintegration as per the following reaction : ""_(6)C""^(14)to""_(7)N""^(14)+""_(-1)beta""^(0) The C""^(14) isotope enters the biosphjere when carbon dioxide is taken up in plant photosynthesis. Plants are eaten by animals, which exhale C""^(14) as CO""_(2) . Eventually, C""^(14) participates in many aspects of carbon cycle. The C""^(14) lost by radioactive decay-replenishment process, a dynamic rquillibrium is established whereby the ratio of C""^(14) to C""^(12) remains constant in living matter. But when an individual plant or an animal dies, the C""^(14) isotpe inn it is no longer replenished, so the ratio decreases as C""^(14) decays. So, ther number C""^(14) nuclei after time t (after the death of living matter) would be less than in a livingthe following formula, t""_(1//2)=0.693 /? The intensity of the cosmic rays have remain the same for 30,000 years. But since some years changes in this are observed due to excessive burning of fossil fuel and nuclear test? Why do we use the carbon dating to calculate the age of the fossil?