What were the defects of mendeleeff's periodic table ?
Plz answer fast
Answers
Hey !!
DEFECTS OF MENDELEEV'S PERIODIC TABLE
- Position of hydrogen in the periodic table was not correctly defined.
- In certain pair of elements the increasing order of atomic masses was not obeyed. Isotopes have not been given separate places in the periodic table.
- Some similar elements were separated and dissimilar elements were grouped together.
- Mendeleev could not explain the cause of periodicity among the elements.
GOOD LUCK !!
Answer:
For all of them it was the first ‘real gold medal’. In fact, India had not won any big event since the Bangkok games. One man who was present then and now is a coach Maharaj Krishan Kaushik. The current coaching team is led by high performance director Roelant Oltmans, chief coach Terry Walsh and coaches Kaushik and Jude Felix.
The 1990’s was a team of mega stars in Indian Hockey. Who are they ?
The goalkeeper P. R. Sreejesh________ .
The current coaching team is led by________ .
The Indian hockey team won the gold in the 1998________ .
Give the word from the passage for ‘enlarged’.
(b) Read the following passage carefully.
The Bora tree grew tall, her flowers bloomed and yielded large, luscious, rosy fruit. But she was vain. She never even whispered to neighbouring trees and bushes. When the butterflies and bees came for nectar, she lifted her branches and swooshed them away. When the birds wanted to build nests in her branches she pricked them with her thorns. She saw that children loved her juicy fruit, so she angrily dropped her flowers and yielded only a few fruit.
One day, the Great Creator came on a visit. All the trees greeted His coming and had joyous tales to tell. But the Bora tree tossed her head and said, “My Lord and Master, I found no one who deserved what you gave to me, so I saved my strength and bore less fruit. I sent the silly birds away because they would destroy the beauty of my branches with their messy nest material”.
The Creator shook his head. “You did a foolish thing”. He said. “What about kindness, compassion and generosity ? What about service to others ? Have they no meaning for you ?” Even as the Lord spoke, the Bora’s fruit grew small and sour; so did the leaves. The bark became rough; thorns grew in plenty. To this day we see the Bora tree thus. As the result of selfishness-she lost what she had.
1.On the basis of your reading of the passage, complete the following statements.
(а) The Bora tree justified her unhelpful and cruel attitude by saying that
(b) The Bora tree dropped her flowers because__________ .
2.Answer the following questions.
(a)What is the moral of the story ?
(b)What characteristics should the Bora tree have inculcated ?
3.Find a word from the passage which means the same as ‘originator’.
2.Theme : “India’s Tryst with Mars”
For the Open Text Based Assessment (OTBA)
(а) How would the Mars Mission benefit the common people ? Give suitable observations and illustrative examples.
(b) How does development occur ? When and how does a country become developed ?