SCIENCE AND TECHNOLOGY (212) TUTOR MARKED ASSIGNMENT (2023-24) 

The atomic numbers of elements A and B are 12 and 8 respectively. They combine together.Write down the formula and nature of bonding in the compound. Name two modern day techniques and state function of each.(a) Name the following H3C–CH = CH–CH3 HC ≡ C–CH3 

Draw the magnetic field lines between poles A and B. Out of the two points P & Q as
shown in figure, at which point the magnetic field strength will be more and why? 

Two balls P and Q having masses 2kg and 4kg respectively are dropped from the same
height simultaneously. Show that they will reach the ground simultaneously 

What is meant by “Bhagidari Scheme”? Why waste bins are coloured red or green for
disposal of wastes?

Complete the following reactions 
(i) Sn (s) + 2 NaOH (aq) + H2O (2) → ?
(ii) Fe (s) + XH2O + 3O2 → ?
(iii) Cu (s) + AgNO3 (aq) → ? + ?
Hot
(iv) 2 HgS (s) + 3O2(g) −−−−→ ? + ?

What is “Reflex Action”? Show the various components in their proper sequence to
represent a “reflect arc”. Begin with the first component which is the ‘stimulus’

Name any one electrical device in your home in which thermostat is used. Explain the
working principle of thermostat used in heating devices with the help of suitable diagram.
Can a bimetallic strip made of brass and silver be used in thermostat? Give resons for your answer

Name and write one point of difference each between the two kinds of Autonomic Nervous system with respect to their effects on (a) heart (b) Urinary Bladder

India has launched many artificial satellites for various purposes successfully. Collect information including photograph about artificial satellites launched by India between 2011-2017 in the field of (i) earth observation (ii) Communication/Meteorological (iii) exploration and (iv) Navigation. Prepare a power point presentation with minimum 4
slides or 4 different charts/poster for the four different categories of above mentioned satellites. You can include name of satellite, photograph, satellite launch date, launch vehicle and any other important information etc.

The students of class X went to the Chemistry Laboratory of nearby school. They saw
different chemical used in the laboratory. They were very much interested to know the
uses of different chemicals. They have collected the following chemicals.
NaHCO3, Na2CO3, CaOCl2, CaSO4
. ½H2O, HCl, NaOH
(i) Name the reaction when HCl and NaOH combined.
(ii) What is the use of Na2CO3?
(iii) Which one is strong acid and strong base?
(iv) What is the use of NaHCO3?
(v) What is the use of CaSO4 . ½ H2O?
(vi) What is the use of CaOCl2?

Session 2018-19 (Science & Technology – 212)

NIOS Solved Assignment (2023-2024) |10th & 12th Class Hindi & English Medium |NIOS TMA Solution

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