IQ Question......

SOLVE IF YOU ARE GENIUS.......

Future To Be Tense

Definition of Future To Be Tense:
                                                        "future to be tense" shows a state or an "existence" of something in "future time"

Example:
1.You will be safe there
2.who will be the boos?
3.it will be a big problem.
4.Tomorrow will never be.
5.we shall be rich one day.
6.everything will be costly in future
7.the students will be regular and punctual.
8.this child will be a great man one day.
9.the last episode of the drama will be interesting

Past Tense of To Be

Definition of Past Tense of To Be:
                                                           "Past To be Tense" shows a "state" or an "existence"  of something in "past time".

Examples:

1.We were friends.

2.I was poor in past 

3.Our destination was away

4.The people were simple in past 

5.Qurban was healthy and welthy

6.Nasima's father was a gentleman

7.Ali Baba was the chief of thieves.

8.Shah latif was a great poet of sindh

9.Quaid-e-Azam was the founder of Pakistan.

Present To be Tense with Examples

Definition of Present tense of To Be:
                                                               "Present To Be Tense" shows a "state" or an "existence" of something in "present time".

Examples:
1. Eaheem is my nephew.
2. Islamabad is a clen city.
3. Moenjodaro is near Larkana.
4.Our doors are open for yoiu
5.Pakistan is our identificatio.
6.Money is necessary for life today.
7.Khana-e-Ka'aba is in Saudi Arabia.
8.Hasan and Hussain are twin brothers
9.Saju, Maju, Yasu and Qasu are friends.

Short Tenses (Grammar)

Definition Of Tense:
                               The word tense has been taken from a Latin word "tempus" which means time. A "tense" shows the time of "being", "existing" and "doing".

Q1. Why ordinary hydrogen is les reactive? OR Q2. Why reactions of ordinary hydrogen are slow?

Q1. Why ordinary hydrogen is les reactive?

                OR

Q1. Why reactions of ordinary hydrogen are slow?

Ans: ordinary hydrogen is diatomic –molecule (H₂) and two atoms in molecule hydrogen are held together by strong covalent bonds. Therefore ordinary hydrogen molecules are very stable and dissociate at extreme condition. Due to this reason, the reactions of ordinary hydrogen are very slow or it is less reactive

PROPERTIES OF POLYMERIC HYDRIDES

PROPERTIES OF POLYMERIC HYDRIDES

1. These hydrides are formed by first two elements of IIA group i.e. Be and Mg.

2. The formulas of these hydrides are (B_eH₂)_n  and (MgH₂)_n

3. In these hydrides large number of Be H₂ or MgH₂ molecules are polymerized, hence these hydries are called as “polymeric” hydrides.

4. The structural of these hydrides are given below

5. The Properties of these hydrides are in intermediate between ionic and covalent hydrides.

PROPERTIES OF METALLIC HYDRIDES OR INTERSTITIAL HYDRIDE

PROPERTIES OF METALLIC HYDRIDES OR INTERSTITIAL HYDRIDE

1. These hydrides are formed by the element of  IB to VIII groups i.e. d block element.

2. These hydrides are called as metallic hydrides because they retain the properties of metals.

3. These hydrides are solids possess high melting points.

4. The hydrides on heating loose hydrogen and leaving behind metal unchanged.

5. Transition elements such as Ni, Pt, Pd etc, hide hydrogen in empty spaces between metal atoms in        their structures, which are called as interstitial spaces. Due to this reason, these hydrides are called as “interstitial hydrides”.

6. These hydrides don’t  show definite atomic ratio in metal to hydrogen atoms and are not stoichiometric in nature.

For Example

                                                Zr₁  H_1.22 and  T_i.l H_1.7.

7. Since metallic hydrides are formed hydrides are formed due to occlusion (adsorption of hydrogen in the metals, hence these release hydrogen in atomic state on heating hence they are used as catalyst in hydrogenation reaction.