Mental Ability – Competitive Exam Preparation – Number Series by adding fixed number – NTSE, NCO, NSO, IMO and other Competitive Exams

Mental Ability – Competitive Exam Preparation – Number Series by adding fixed number – NTSE, NCO, NSO, IMO and other Competitive Exams

The sequence or series of numbers created by adding fixed number :

1. 5 , 7 , 9 , 11 , 13 etc – Number sequence obtained by adding fixed number 2
2. 6, 11, 16, 21, 26 etc – Number sequence obtained by adding fixed number 5

Similarly number sequence can be obtained by adding two fixed numbers alternatively or by adding two fixed numbers after repeated series. Example below:

5, 7, 10,12, 15, 17, 20 etc – This number sequence is formed by adding 2 and 3 alternatively

5, 6, 7, 9, 11, 13, 16, 19, 22 etc – This number sequence is formed by adding fixed number 1 , 2 and 3 after regular interval i.e after 3 numbers

Below is some questions to practise this. Please leave your answers in comment box on this page or write to us on abhyas.practise@gmail.com.

We will revert back with right answers at the earliest

Complete the sequence by adding fixed numbers

1. 1234, 1236, 1238, _____, 1242, 1244, _____
2. 1400, 1500, ______ , 1700, 1800, 1900, ______
3. 3, 9, 15, _____, 27, 33, 39, ______, 51
4. 8, 17, _____, 35, 44, _____, 62
5. 10, 15, 25, 35, 40, 45, 55, 65, _____ , 75, 85, ______
6. 6, 9, 15, 21, 24, 27, 33, ______ , 42, ______
7. 3, 5, 7, 10, 13, 16, 18, 20, _____, 25, ______, 31
8. 10, 20, 50, _____, 90, 100, 130, 160, _____, 180, 210, 240
9. 1000, 1200, 1600,________, 2200, 2400, 2800, 3200
10. 86, 96, 116, 136, 166, ______, 236, 276, 326, 376

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Human Body Blood Notes for Competitive Exams

Human Body Blood Notes for Competitive Exams

Blood is fluid connective tissue

• pH of blood is 7.4
  • pH is a scale used to specify the acidity or basicity of an solution
  • pH of 7 is neutral
  • pH below 7 is acidic
  • pH above 7 is basic

Hence blood is basic

Quantity of blood is around 7-10% of body weight. Human body contains 5-6 litres of blood

• Blood consists of two parts
  • Plasma
    • Plasma is 55%
    • Plasma contains 90% – Water, 10% – Protein, Salts and Glucose
    • Plasma is liquid part of blood.
    • Plasma transports oxygen, carbon di oxide, digested food and excretory material
  • Blood Cells / Corpuscles
    • Blood Cells / Corpuscles is 45%
    • Blood cells is divided into – RBC , WBC and Platelets
    • 
    • RBC – Red Blood Cells / Corpuscles
      • Biological Name of RBC is Erthrocytes
      • RBC has no nucleus and carry oxygen
      • RBC is present in large quantity
      • For every 600 RBC, there is 1 WBC i.e. RBC Count :WBC Count is 600:1 ratio
      • RBC is formed in bone marrow
      • 
      • RBC dies in spleen and liver.
      • 
      • Graveyard of RBC is liver
      • Lifespan of RBC is 90 – 120 days
        • Haemoglobin is part of RBC
        • Haemoglobin contains Haemo ( Iron – Fe 2+ ) and globin ( protein ). Blood is red in colour due to Iron in Haemoglobin. Globin helps combine oxygen and carbon di oxide and carry oxygen.
        • Diseases associated with haemoglobin is anemia and jaundice
    • WBC – White Blood Cells / Corpuscles
      • Biological Name of RBC is Levcocytes
      • WBC is formed in bone marrow
      • WBC dies in blood
      • Lifespan of WBC is 3 – 5 days
      • Quantity of WBC is less than RBC. RBC Count :WBC Count is 600:1 ratio
      • WBC forms antibodies. Antibodies protect us from diseases and infections.
      • AIDs/HIV causes deficiency of WBC
    • Platelets
      • Biological Name of Platelets is Thrombocyte
      • Platelets are present in human body and mammals
      • Platelets is formed in bone marrow
      • Platelets dies in blood
      • Lifespan of Platelets 3 – 5 days
      • When bleeding happens , clot is formed
      • Platelets help in blood clotting
      • Due to Dengue , platelets count is reduced

National Level Science Talent Search Examination- NSTSE – CLASS 2 QUESTION 2021 – PART 3

National Level Science Talent Search Examination- NSTSE – CLASS 2 QUESTION 2021 – PART 3

Look at the picture and answer question no. 21 – 23.

21. Who wished to have a pet ?
(A) Maggie (B) Radha
(C) Sony (D) Teena

22. Harry believes that a cat will be
(A) a burden (B) a great worry
(C) a good friend (D) an experience

23. What does pets teach us ?
(A) To tease animals (B) To respect all living beings
(C) To grow plants (D) To fight with each other

24. What kind of clothes are made from the fibre that we get from the figure shown below ?

(A) Cotton (B) Silk
(C) Woollen (D) Nylon

25. Which animal provides us leather ?

26. Which of these cannot grow ?

27. Which of these become a mango in mango tree

(A) A root (B) A flower
(C) A leaf (D) A twig

28. Animal that is hunted and killed for food is called prey. which of the below animal is prey for frog ?

29. Identify a fruit ?

30. Tina is listening to her favourite songs. She is using her sense of

(A) sight (B) touch
(C) smell (D) hearing

National Level Science Talent Search Examination- NSTSE – CLASS 2 QUESTION 2021 – PART 2

National Level Science Talent Search Examination- NSTSE – CLASS 2 QUESTION 2021 – PART 2

11. How many groups can be made if each group contains 5 parrots ?

(A) 4 (B) 3 (C) 5 (D) 9

12. Which pencil has the same length as pencil T ?

.

(A) P (B) Q (C) R (D) S

13. If we add 7 hundreds, 7 tens and 7 ones, then what is the result?

(A) 707 (B) 777 (C) 717 (D) 700

14. Tinku has 4 groups of shapes.

In which group will he put a pencil box ?

(A) P (B) Q (C) R (D) S

15. How many eggs must be transferred from Basket A to Basket B so that the 2 baskets have the same number of eggs ?

(A) 5 (B) 6 (C) 3 (D) 11

16. Which clock face does not show the time between 10:00 and 12:00.

17. Identify the missing number in the box ?

(A) 5 (B) 6 (C) 7 (D) 10

18. 3 flowers are sold for 10. Mrs Naina needs to buy 12 flowers. How much amount must she pay ?

(A) 15 (B) 40 (C) 30 (D) 10

19. Identify the option which matches the given pattern.

(A) 8 (B) 11 (C) 9 (D) 10

20. Which container has the least amount of water ?

(A) Q (B) P

(C) R (D) Both (A) and (B)

National Level Science Talent Search Examination- NSTSE – CLASS 2 QUESTION 2021 – PART 1

National Level Science Talent Search Examination- NSTSE – CLASS 2 QUESTION 2021 – PART 1

01. Which option represents the grouping ?

02. Mona wrote a correct calculation. Then she covers two same digits with same stickers ?

.

Which digit is under the stickers ?

(A) 6 (B) 9 (C) 7 (D) 8

03. A television show is going to start 60 minutes later. What time will the television show start according to the time given below.

(A) 9:15 (B) 8:00 (C) 9:30 (D) 9:45

04. Which set of number bonds is wrong ?

(A) Q (B) S (C) P (D) R

05. Which is the smallest 2-digit number that can be formed with the digits 8, 3, 1 ?

(A) 81 (B) 31 (C) 18 (D) 13

06. A man bought 4 pairs of skirts at 200 each. Find the total amount of money he spent.

(A) 805 (B) 800 (C) 850 (D) 600

07. The cat goes up 3 steps each time the rabbit goes down 2 steps. On which step do they meet ?

(A) 3rd (B) 4th (C) 5th (D) 6th

08. There are 33 fruits in a bag. 16 of them are oranges and the rest are guavas. How many more guavas than oranges are there in the bag ?

(A) 1 (B) 2 (C) 16 (D) 17

09. I am fifth from left but seventh from the right in the queue. How many people are there in the queue ?

(A) 8 (B) 11 (C) 9 (D) 10

10. What is the mass of the bunch of grapes ?

(A) 300 g (B) 350 g (C) 35 kg (D) 350 kg