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The conventional 10+2 school curricula structure is to be replaced by a 5+3+3+4 structure corresponding to ages 3-8, 8-11, 11-14, and 14-18 years respectively. This structure, when broken up into corresponding grades, is: Three years of anganwadi or preschool + two years in primary school in grades 1-2 covering ages 3 to 8 years The ‘preparatory stage’ covering ages 8 to 11 years or grades 3-5 The ‘middle stage’ covering ages 11 to 14 years or grades 6-8 The ‘secondary stage’ covering ages 14 to 18 years in two phases – grades 9-10 in the first and grades 11-12 in the second
Which is the correct IUPAC name for CH₃CH₂CH(CH₃)CH₂OH?
What is the simplest hydrocarbon?
Alkali metals have ______.
I. low melting points
II. low densities
Which acid is found in vinegar?
Water is a good solvent of ionic salts because -
Which of the following is correct regarding isobars?
I. They have different atomic numbers
II. The have same mass numbers
In which medium, velocity of sound is maximum?
In which form is iron ore primarily found in nature?
100 gram of ice at 0°C is mixed with 100 gram of water at 80°C. What will be the final temperature of the mixture ?
Which of the following pair of element – atomicity is correct?
I. Helium – monoatomic
II. Oxygen – triatomic