12. Light and sound

-
Image
12. Light and sound Fill in the blanks.  1. Objects which cannot give out their own light are called Non - luminous.  2. Trandparent   object allow light to pass through them completely.  3. Reflection   is bouncing back of light from a smooth shiny surface.  Write true or false.  1. Sound does not require any medium to travel. (F)   2.The sound of loudspeaker is an unpleasant sound. (T)  3.sound travels through air in the form of particles. (F)  Let us practise 1. Fill in the blanks.  a. Noise is produced by irregular    sound waves.  b. Sun is the main source of heat and light on earth.  c. When light hits a surface and cannot pass through it, the surface is called opaque.  d. Sound is produced due to vibration of objects.  2 . Write 'T' for true and 'F' for false.  a. Honking car is an example of a pleasant sound. (F)  b. Light cannot bend around the cornera. (T)   c. Wat...
Post a Comment

IMO 2023-2024

-
SOF INTERNATIONAL MATHEMATICS OLYMPIAD
std 3
Chapter 1: Number sense

1. Sneha had a collection of odd number of stickers. Which of the following can be the number of her stickers? 
Ans. 941
Because 941 is odd number

2.which of the following shows CORRECT number name of Mr sharma house number
Ans. Nine thousand five hundred and twenty one

3. Which of the following shows the digit number formed by using the digits 7, 5, 0,2 each only once? 
Ans. (C) 

4 .The greatest four digit even number that can be formed by using the digits 7,0,6,5 without repeating the digits is____
Ans. (C) 
Because 7650 is a greater even number. 

5.which place value will determine the larger number among the given two numbers? 
Ans. (C) 
Because-  ten place number there are greater number 7 and smaller number 3










Comments

Post a Comment

Popular posts from this blog

Reproduction in animals (stateboard)

-
Image
4-Reproduction in animals Time to answer Write true or false.  1. Mammals do not give birth to young ones directly. (F)  2.Mammals are warm blooded. (T)  3.mammals have hair or fur on their body. (T)  4. Mammals look after their young ones for a very short period of time. (F)  Fill in the blanks.  1. Albumen is the white part of the egg.  2.frogs lay their eggs in large clusters known as spawns.  3. The larva of housefly is called maggot.  4. The process by which insecta shed their skin is called moulting.  5. In eggs, the yolk provides nutrition to the developing embryo.  1. Multiple choice questions (MCQs)  a . Which of the following is the proo by which a young one comes out of an egg?  Ans. 2. Laying b. What are the animals who change their body temperature according to the temperature of their surrounding known as?  Ans. 2. Cold blooded C. Which of the following is not a mamals?  Ans. Crocodile ...
Read more

7- Environment std-4 science

-
Image
answersofbooks.blogspot.com Time to answer Full in the blanks.  1. The waste material which can be decomposed by microbes in the soil are called biodegradable waste 2.Non- biodegradable wastes pollute the soil 3.plastics and glass should be thrown in blue bins for recycling.  1. Multiple choice questions (MCQs)  Tick(√) the correct option.   a . Which of the following types of pollution causes respiratory diseases and lung cancer?  Ans. 1.Air pollution b. Which of the following are the effects of soil pollution?  Ans. 3.water pollution c. Which of the following should be thrown in green bins?  Ans. Plastic cup d. Air pollution affects Ans. 3.brain Q2. Fill in the blanks.  a. Soil pollution badly affects the growth of crops/ plant.  b. Smoke causes Air pollution.  c. We should not use plastic bags as they are nob-biodegradable.  3. Name the following.  a. Two living components of your environment 1.plan...
Read more

ifs officer Hashmatali

-
Image
ifs officer Here are some questions and solutions associated to the Indian Foreign Service (IFS) and retirement benefits: Eligibility and Retirement Benefits 1. *What is the retirement age for IFS officers?* Answer: 60 years. 2. *What are the retirement advantages for IFS officers?* Answer: - Pension - Gratuity - Leave encashment - Retirement advantages underneath the New Pension Scheme (NPS) Pension and Gratuity 1. *How is the pension for IFS officers calculated?* Answer: - Based on the remaining drawn salary - Calculated as 50% of the final drawn salary 2. *What is the gratuity for IFS officers?* Answer: - Calculated as 16.5 months' salary - Maximum restrict of ₹20 lakhs Leave Encashment and Other Benefits 1. *Can IFS officers encash their leave?* Answer: Yes, IFS officers can encash up to three hundred days of earned leave. 2. *What different retirement advantages are accessible to IFS officers?* Answer: - Retirement advantages underneath the NPS - Medical benefits -...
Read more