Express (1-2i)^2/(1+i)^2 in the form of a+ib
Answers
Answer:
Delhi Public School, Indore
Session -2021-22
Practice Worksheet
Chapter -1 - The Earth And The Solar System
Fill in the blanks
1 The Sun, The Moon and The Stars are called
2 The
the sun.
is an assembly of eight planets which revolve around
3 In 2006, the ninth planet-
was classified as a dwarf planet.
4 The
is located in the centre of the solar system,
5 The Earth takes
year to complete one revolution around the sun.
6 The Sun is a huge ball of
7
are celestial bodies, which revolve around planets.
8 The brightest star that we see in the night sky is the
9 Our solar system is located in a galaxy called the
10 Orion has the shape of an
Give one word for the following
1 Vast expanse of space
2 Planets revolve around the sun in a fixed path
3 The earth has one natural satellite
4 A scientist who studies the universe and celestial bodies
5 A group of stars forming a recognizable pattern
6 A cluster of stars
32.1. Three Features A, B and C are marked on the given political outline
map of India.
Identify any two features with the help of the following information and write
their correct names on the lines marked in the map:
A. The place where the Indian National Congress Session (1920) was held in
September.
B. A place where Chauri-Chaura Incident held.
C. The place where Mahatma Gandhi breaks the salt law.
32.2. On an outline map of India, mark and locate the any three following
places:
A. Noida - A software technology park
B. TISCO - An iron and steel plant
C. Kalpakkam - A Nuclear power plant
D. Indore - A Cotton textile industry
E. Raja Sansi- An International airport
Whic
buch -
er. It
Time to Learn
es.
A. Tick (/) the correct answers.
1 Which of the following areas has high density of population?
b. Thick forests
c. Hot deserts
d. River valleys
Marshlands
2 Which of the following activities is done on private landholdings?
b. Grazing
s Farming
d. Fuelwood collection
à Fodder collection
3. Which of the following factors is not responsible for soil formation?
b. Colour of rocks
c. Humus
d. Slope of the land
a Rainfall
4. Leaching is most common in the
b. subsoil.
c. rock fragments.
d. parent rock
z topsoil.
5. Which of the following methods is most useful for checking soil erosion on the steep slopes?
d. Rock dams
a. Cover crops
b Terrace cultivation c. Shelter belts
6. Which of the following methods help soil to regain its fertility?
b. Overgrazing c. Leaching
Fallowing
a. Deforestation