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Anushka Srivastava from Cjm, Dehradun
Subject :NSO    Class : Class 7

Which of the following statements is/are correct?
I. The excretory system in humans consist of a pair of kidneys, ureter, urinary bladder, a pair of urethras and urinary opening.
II. In lower animals such as Hydra waste product is excreted by the process of diffusion through the body surface.
III. The urine passes from the kidneys through urethra into urinary bladder.
IV. Urine consists of water, urea and other waste products and urea is breakdown product of proteins.

AI and IV
BII and IV
CII and III
DI and III


i even do think that the 1st option is correct

Ans 1:

Arjun from Sri Kumaran Public School - ICSE, Bengaluru
Class : Class 8
This is wrong. Hydra is a Cnidarian, therefore the waste exits through its mouth.

Ans 2:

Anushka Srivastava from Cjm, Dehradun
Class : Class 7
9jh

Ans 3:

AISHA from K.V.No.-1,A.F.S.,SEC.-14, GURUGRAM
Class : Class 10
B

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Amol Athawale from WoodRidge High, aurangabad
Subject :NSO    Class : Class 8

The different steps of agricultural practices are given below randomly.

(i) Irrigation (ii) Ploughing
(iii) Weeding (iv) Levelling
(v) Harvesting (vi) Fertilisers
(vii) Sowing (viii) Crop protection
(ix) Storing seeds  

Which of the following represents the correct sequence of these practices?

A (ii) – (iv) – (vii) – (i) – (vi) – (iii) – (viii) – (v) – (ix)
B (iv) – (ii) – (vii) – (i) – (vi) – (iii) – (viii) – (v) – (ix)
C (ii) – (vii) – (iv) – (iii) – (i) – (v) – (vi) – (viii) – (ix)
D (iv) – (vii) – (i) – (ii) – (iii) – (viii) – (ix) – (v) – (vi)


i think correct answer is B not A because levelling is done before ploughing.

Ans 1:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

Ans 2:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

Ans 3:

A Venkata Sai Pranav from Podar International School, Bhusawal
Class : Class 9
It should be B

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PARTH MEHTA from Navrachana school, Vadodara
Subject :NSO    Class : Class 4

Read the given paragraph with few blanks and select the option that correctly fills up any three of these blanks.
Human adults have P types of teeth in their dentition. These are Q , R , S and molars. Q helps in cutting or biting food. There are T Q in each jaw. R teeth are absent in milk teeth set but there are U such teeth in permanent teeth set. S are four in number and helps in V food.

A P-8, R-Premolars, V-Grinding
B Q-Incisors, T-4, U-8
C S-Canines, T-8, U-4
D P-8, S-Premolars, V-Tearing

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Human adults have 4(P) types of teeth in their dentition. These are Incisors(Q), Premolars(R), Canines(S) and molars. Incisors(Q) helps in cutting or biting food. There are 4(T) Incisors(Q) in each jaw. Premolars(R) teeth are absent in milk teeth set but there are 8(U) such teeth in permanent teeth set. Canines(S) are four in number and helps in Tearing(V) food.


Ans 2:

Bushra aslam from uttam, Ghaziabad
Class : Class 8
NA

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PARTH MEHTA from Navrachana school, Vadodara
Subject :NSO    Class : Class 4

Ans 1:

PARTH MEHTA from Navrachana school, Vadodara
Class : Class 6
Answer shud be d

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PARTH MEHTA from Navrachana school, Vadodara
Subject :NSO    Class : Class 4

Ans 1:

suhana priyadarsini nayak from VELS GLOBAL SCHOOL, Bengaluru
Class : Class 5
Answer b will be the correct answer as mosquito is not a social insect while others are termite is not useful insect and honey bee is a useful insect

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B


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ISHAN DAS from DELHI PUBLIC SCHOOL , ANGUL
Subject :NSO    Class : Class 4

Ans 1:

jathin from national public school chikkabanavara, banglore
Class : Class 4
THE ANSWER C

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Naman from Uis, Bangalore
Subject :NSO    Class : Class 3

Ans 1:

Anaahad Mehar Satsangi from Delhi Public School Agra, Agra
Class : Class 3
the correct answer will be c

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Shreya Sudarshan from Creaa academy for learning , Bengaluru
Subject :NSO    Class : Class 6

Observe the given situation and answer the following questions. Rahul and Ravi are playing in a ground. They start running from the same point X simultaneously in the ground and reach point Y at the same time by following paths marked 1 and 2 respectively, as shown in the figure.


Which of the following is correct statement for the given situation?

A Rahul covers a longer distance with a lower speed.
B Rahul covers a longer distance with a higher speed.
C Rahul and Ravi both cover different distances with same speed.
D Ravi covers a shorter distance with higher speed.


Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Rahul and Ravi both cover different distances XOY and XY respectively at the same time. It is clear from the figure  that the distance XOY is longer than distance XY .So, the speed of Rahul must be greater than that of Ravi.


Ans 2:

Ashwak from Cambridge, Jalandhar
Class : Class 8
B

Ans 3:

Sarang Shete from Amanora School, Pune
Class : Class 8
b'

Ans 4:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9

Ans 5:

P A Reyyansh from Ann Mary School, Dehradun
Class : Class 10
this was ez

Ans 6:

Vedant from DON BOSCO, CHENNAI
Class : Class 2
rrrrrrrrrrrrrrrrrrr

Ans 7:

Yashraj from pps, pune
Class : Class 6
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

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Arun from st thomas public school, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

mystic bro7pro from arbor school, Hyderabad
Class : Class 5
C

Ans 2:

Pranav Kartik from DPS sushant lok , Gurgaon
Class : Class 3
C

Ans 3:

Pratheek from Null, Null
Class : Class 4

Ans 4:

Maanasa from Billabong high, Chennai
Class : Class 6
Answer is d

Ans 5:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Answer is C . As you can see the electrons move from negative termina to positive terminal .the short line of battery shows that it is negative terminal and as you know that rubber is insulator of electricity so the electrons could not pass through bulb b¹.

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Deeptajit Roy from Gems Modern Academy, Dubai
Subject :NSO    Class : Class 6

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