Question 1.
Humans mostly eat the seeds
(a) Rice, Pulses
(b) Mustard, Peanuts
(c) Wheat, Soya-bean
(d) All of these
Answer: (d) All of these
Question 2.
Which of the following is not a food ?
(a) Pulses
(b) Bread
(c) Petrol
(d) Ghee
Answer: (c) Petrol
Question 3.
We get cereals (wheat, rice, maize, etc.) from:
(a) Animals
(b) Plants
(c) (a) & (b) both
(d) none of these
Answer: (b) Plants
Question 4.
Food is necessary because
(a) it provides growth
(b) it provides energy
(c) it keeps us healthy
(d) all of these
Answer: (d) all of these
Question 5.
Sugar comes from which of the following plants?
(a) Sugar cane
(b) Banana
(c) Paddy
(d) Groundnut
Answer: (a) Sugar cane
Question 6.
Which part of a mustard plant is edible?
(a) Stem and roots
(b) Seeds and flowers
(c) Leaves and flowers
(d) seeds and leaves
Answer: (d) seeds and leaves
Question 7.
The raw materials used to prepare a dish are called
(a) apiculture
(b) ingredients
(c) all of these
(d) pods
Answer: (b) ingredients
Question 8.
According to Mendeleev's periodic law the elements were arranged in the periodic table in the order of
(a) increasing atomic nmbers
(b) decreasing atomic numbers
(c) increasing atomic masses
(d) decreasingatomic masses
Answer: (a) increasing aomic number
Question 9.
In Period 2 which element has largest atomic radii
(a) Lithium
(b) Berillium
(c) Boron
(d) Carbon
Answer: (a) Lithium
Question 10.
The property of an element in the periodic table depends on its, ________.
(a) atomic size
(b) atomic mass
(c) Electronic configuration
(d) Number of proton
Answer: (c) electronic configuration
Question 11.
An element has configuration 2, 8, 1 it belong to
(a) group 1 period 3
(b) group 3 period 1
(c) group 1 period 8
(d) roup 17 period 3
Answer: (a) group 1 period 3
Question 12.
Amount of energy released when an atom accept electron in gasses state is known as
(a) Electronegativity
(b) Ionisation Potential
(c) Electron Afinity
(d) Electronpositivity
Answer: (c) Electron Afinity
Question 13.
The number of electrons in the valence shell is equal to its ________.
(a) atomic mass
(b) group number
(c) period number
(d) atomic volume
Answer: (b) group number
Question 14.
The non-metallic element present in the third period other than sulphur and chlorine is
(a) oxygen
(b) flourine
(c) nitrogen
(d) phosphorus
Answer: (d) phosphorus
Question 15.
At the end of each period the valence shell is __________.
(a) incomplete
(b) half filled
(c) singally occupies
(d) completly filled
Answer: (d) completely filled
Question 16.
The modern periodic table is given by ________
(a) Mendeleev
(b) Einstein
(c) Bhor
(d) Mosley
Answer: (d) Mosley
Question 17.
Elements belonging to groups 1 to 17 are called __________.
(a) inner trasition element
(b) tranisition element
(c) nobel gas
(d) normal element
Answer: (d) normal element
Question 18.
The properties of eka-aluminium predicted by Mendeleev are the same as the properties of later
discovered element:
(a) Scandium
(b) Germanium
(c) Gallium
(d) Aluminium
Answer: (d) all
Question 19.
The family of elements having seven electrons in the outermost shell is ______.
(a) alkali metals
(b) alkaline earth metals
(c) halogens
(d) nobel gases
Answer: (c) halogens
Question 20.
The family of elements to which potassium belongs is _________.
(a) alkali metals
(b) alkaline earth metals
(c) halogen
(d) nobel gas
Answer: (a) alkali metals
Question 21.
An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong?
(a) 4th group
(b) 6th group
(c) 3rd group
(d) 2nd group
Answer: (d) 2nd group
Question 22.
At the time of Mendeleev, the number of elements known was
(a) 63
(b) 65
(c) 62
(d) 64
Answer: (a) 63
Question 23.
Which of the following factors does not affect the metallic character of an element?
(a) ionisation potential
(b) atomic size
(c) electro negitivity
(d) atomic radius
Answer: (c) electro negitivity
Question 24.
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the
following elements found a place in the Periodic Table later?
(a) Chlorine
(b) Silicon
(c) Oxygen
(d) Germanium
Answer: (d) Germanium
Question 25.
A liquid non-metal is ___________.
(a) phosphorus
(b) mercury
(c) bromine
(d) nitrogen
Answer: (c) bromine