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The error is in part 2. The correct phrase should be "has to submit." "Each" is singular and requires a singular verb "has".
_____ are a group of chemicals that influence cell division and shoot formation.
A neutral atom has 9 electrons and mass number is 19. What is the number of neutrons in the atom?
The product of the equivalent weight and valency of an element equals its ______.
The orbital velocity of a satellite depends on:
_____ is used for making chemical apparatus like beakers, flasks, etc.
Which of the following substances will turn red litmus paper blue?
What is the primary cause of tides on Earth?
What is the common characteristic of elements in the same group of the periodic table?
Silver bromide when kept in sunlight undergoes a change in color. What is the color formed?
White phosphorus is stored in which of the following substances?